I understand the importance of efficiency and accuracy in the matching process, Robman. I can share why you're unable to show the bank details and chosen transactions in QuickBooks Online (QBO). 

When you connect a bank in QuickBooks, the downloaded data is based on what your bank shares with us and how it is published online. I would encourage you to reach out to your financial institution. They have the tools to set up in your bank setting to show the bank details in QuickBooks. 

Furthermore, I would encourage you to reconcile your accounts every month. This way, you can monitor your transactions and detect any possible errors accordingly. For the step-by-step guide, please check out this article: Reconcile an account in QuickBooks Online.

Keep me posted if you need further assistance matching your bank transactions in QuickBooks. I'll be more than happy to help you. Have a great day.