You may need a bridging app
Another option, consider one of these CRM apps. They support QBO.
Hope it helps.
Commercient has an integration app for Quickbooks and Zoho CRM if you are still in the market for a solution you can check it out here: https://www.commercient.com/product/sync-integration-for-quickbooks-online-and-zoho-crm/
All the best!
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