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  <xsd:element abstract="true" id="boc_CapitalizedContractCostsMember" name="CapitalizedContractCostsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_ClassBCommonStockOfYellowstoneAcquisitionCompanyMember" name="ClassBCommonStockOfYellowstoneAcquisitionCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_ClassOfWarrantOrRightExercisedDuringPeriod" name="ClassOfWarrantOrRightExercisedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_ClassOfWarrantOrRightExpiredDuringPeriod" name="ClassOfWarrantOrRightExpiredDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_ClassOfWarrantOrRightIssuedDuringPeriod" name="ClassOfWarrantOrRightIssuedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_ClassOfWarrantOrRightTerm" name="ClassOfWarrantOrRightTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_CollateralRelease" name="CollateralRelease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="boc_CommissionPercentOfGrossSalesPricePerShare" name="CommissionPercentOfGrossSalesPricePerShare" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_CommonStockVotingRightsPerShare" name="CommonStockVotingRightsPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="boc_CommonStockWarrantsOfSkyHarbourGroupCorporationMember" name="CommonStockWarrantsOfSkyHarbourGroupCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_ConsolidatedFixedChargeRatioRequirement" name="ConsolidatedFixedChargeRatioRequirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_CostMethodInvestmentOwnershipPercentage" name="CostMethodInvestmentOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_CostOfInsuranceRevenues" name="CostOfInsuranceRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="boc_CreditAgreementMaximumDividendAmount" name="CreditAgreementMaximumDividendAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="boc_CustodialRiskDisclosureTextBlock" name="CustodialRiskDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_DeconsolidationGainLossAssetsAndLiabilities" name="DeconsolidationGainLossAssetsAndLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
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  <xsd:element id="boc_DepreciationDepletionAmortizationAndAccretion" name="DepreciationDepletionAmortizationAndAccretion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_ElevationOutdoorAdvertisingMember" name="ElevationOutdoorAdvertisingMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_EquityInvestmentsMember" name="EquityInvestmentsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_EquityMethodInvestmentPricePerShare" name="EquityMethodInvestmentPricePerShare" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_EquityMethodInvestmentShares" name="EquityMethodInvestmentShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
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  <xsd:element id="boc_EquityMethodInvestmentsPricePerShare" name="EquityMethodInvestmentsPricePerShare" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_EquityOfferingProgramAggregateSharePrice" name="EquityOfferingProgramAggregateSharePrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="boc_EquitySecuritiesFvniAccumulatedUnrealizedGainLoss" name="EquitySecuritiesFvniAccumulatedUnrealizedGainLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="boc_FIFMember" name="FIFMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_FiberTowersAndBroadbandEquipmentMember" name="FiberTowersAndBroadbandEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_FirstNationalBankOfOmahaMember" name="FirstNationalBankOfOmahaMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_InfowestIncInfowestAndGoFiberLlcGoFiberMember" name="InfowestIncInfowestAndGoFiberLlcGoFiberMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_InvestmentTransferOfInterest" name="InvestmentTransferOfInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
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  <xsd:element id="boc_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseFavorableDevelopmentPriorYears" name="LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseFavorableDevelopmentPriorYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="boc_LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates" name="LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="boc_MaximumSharesOfCommonStockRegisteredByCertainSellingShareholders" name="MaximumSharesOfCommonStockRegisteredByCertainSellingShareholders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_MinimumConsolidatedLeverageRatioRequirement" name="MinimumConsolidatedLeverageRatioRequirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="boc_NonredeemablePrivatePlacementWarrantsMember" name="NonredeemablePrivatePlacementWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_OfficeFurnitureAndEquipmentMember" name="OfficeFurnitureAndEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_OperatingLeaseAssetsAndLiabilitiesTableTextBlock" name="OperatingLeaseAssetsAndLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_OtherInvestmentIncomeLoss" name="OtherInvestmentIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="boc_PaymentsForDeferredUnderwritingFee" name="PaymentsForDeferredUnderwritingFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="boc_PaymentsOnShorttermPayablesForBusinessAcquisitions" name="PaymentsOnShorttermPayablesForBusinessAcquisitions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_PermitsLicensesAndLeaseAcquisitionCostsMember" name="PermitsLicensesAndLeaseAcquisitionCostsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_PremiumMember" name="PremiumMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_PresidentOfUCSMember" name="PresidentOfUCSMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element id="boc_ReclassificationOfMarketableSecuritiesToInvestmentInAffiliate" name="ReclassificationOfMarketableSecuritiesToInvestmentInAffiliate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="boc_ReclassificationToConsolidatedSubsidiaries" name="ReclassificationToConsolidatedSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="boc_RevisionOfPreviouslyIssuedFinancialStatementsPolicyPolicyTextBlock" name="RevisionOfPreviouslyIssuedFinancialStatementsPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_SaleOfUnitPricePerUnit" name="SaleOfUnitPricePerUnit" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="boc_ShortTermPayableForAcquisition" name="ShortTermPayableForAcquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="boc_SiteLocationMember" name="SiteLocationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_SkyHarbourGroupCorporationClassACommonStockMember" name="SkyHarbourGroupCorporationClassACommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_SkyHarbourGroupCorporationMember" name="SkyHarbourGroupCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_StructuresAndDisplaysMember" name="StructuresAndDisplaysMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" name="SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_TermLoan1Member" name="TermLoan1Member" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_TermLoan2Member" name="TermLoan2Member" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_The24thStreetAssetManagementLLCMember" name="The24thStreetAssetManagementLLCMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_The24thStreetFundsSpecialPurposeEntitesMember" name="The24thStreetFundsSpecialPurposeEntitesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_USTreasuryNotesAndCorporateBondsMember" name="USTreasuryNotesAndCorporateBondsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_UnitsIssuedDuringPeriodNumber" name="UnitsIssuedDuringPeriodNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_UnitsIssuedDuringPeriodNumberOfCommonStockShares" name="UnitsIssuedDuringPeriodNumberOfCommonStockShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_UnitsIssuedDuringPeriodNumberOfWarrants" name="UnitsIssuedDuringPeriodNumberOfWarrants" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_UnitsIssuedDuringPeriodPricePerUnit" name="UnitsIssuedDuringPeriodPricePerUnit" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="boc_VariableAndShorttermLeaseCost" name="VariableAndShorttermLeaseCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_VehiclesAndEquipmentMember" name="VehiclesAndEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_VotingCommonStockOfPrivatelyHeldCompanyCBTHoldingCorporationMember" name="VotingCommonStockOfPrivatelyHeldCompanyCBTHoldingCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_WarrantsForCommonClassAStockMember" name="WarrantsForCommonClassAStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_WarrantsForCommonClassBStockMember" name="WarrantsForCommonClassBStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_YellowstoneAcquisitionCompanyMember" name="YellowstoneAcquisitionCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_statement-statement-note-13-leases-operating-lease-assets-and-liabilities-details" name="statement-statement-note-13-leases-operating-lease-assets-and-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_statement-statement-note-13-leases-supplemental-cash-flow-information-related-to-operating-leases-details" name="statement-statement-note-13-leases-supplemental-cash-flow-information-related-to-operating-leases-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_statement-statement-note-14-industry-segments-tables" name="statement-statement-note-14-industry-segments-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-15-reserves-for-losses-and-loss-adjustment-expenses-reserves-balance-for-losses-and-loss-adjustment-expenses-details" name="statement-statement-note-15-reserves-for-losses-and-loss-adjustment-expenses-reserves-balance-for-losses-and-loss-adjustment-expenses-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-15-reserves-for-losses-and-loss-adjustment-expenses-tables" name="statement-statement-note-15-reserves-for-losses-and-loss-adjustment-expenses-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="boc_statement-statement-note-3-cash-cash-equivalents-and-restricted-cash-tables" name="statement-statement-note-3-cash-cash-equivalents-and-restricted-cash-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-4-accounts-receivable-schedule-of-receivables-details" name="statement-statement-note-4-accounts-receivable-schedule-of-receivables-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-4-accounts-receivable-tables" name="statement-statement-note-4-accounts-receivable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-5-property-and-equipment-schedule-of-property-plant-and-equipment-details" name="statement-statement-note-5-property-and-equipment-schedule-of-property-plant-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-5-property-and-equipment-tables" name="statement-statement-note-5-property-and-equipment-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-6-business-acquisitions-pro-forma-information-details" name="statement-statement-note-6-business-acquisitions-pro-forma-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-6-business-acquisitions-schedule-of-recognized-identified-assets-acquired-and-liabilities-assumed-details" name="statement-statement-note-6-business-acquisitions-schedule-of-recognized-identified-assets-acquired-and-liabilities-assumed-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-6-business-acquisitions-tables" name="statement-statement-note-6-business-acquisitions-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-7-intangible-assets-schedule-of-future-amortization-intangible-assets-details" name="statement-statement-note-7-intangible-assets-schedule-of-future-amortization-intangible-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-7-intangible-assets-schedule-of-intangible-assets-details" name="statement-statement-note-7-intangible-assets-schedule-of-intangible-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-7-intangible-assets-tables" name="statement-statement-note-7-intangible-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-as-restated-reconciliation-of-the-companys-investments-in-equity-affiliates-details" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-as-restated-reconciliation-of-the-companys-investments-in-equity-affiliates-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-available-for-sale-securities-details" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-available-for-sale-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-marketable-equity-securities-and-trading-securities-details" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-marketable-equity-securities-and-trading-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-schedule-of-investments-details" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-schedule-of-investments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-summarized-financial-data-details" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-summarized-financial-data-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-tables" name="statement-statement-note-8-investments-including-investments-accounted-for-using-the-equity-method-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-9-fair-value-fair-values-for-investments-details" name="statement-statement-note-9-fair-value-fair-values-for-investments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-note-9-fair-value-tables" name="statement-statement-note-9-fair-value-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="boc_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
