Connect with and learn from others in the QuickBooks Community.
Hello there, @jgl.
You'll have to create parent and sub accounts so you'll be able to connect two bank accounts. Here's how:
Then you can connect the two sub accounts in the chart of accounts.
For more detailed instruction, see this article:Add an account to your chart of accounts in QuickBooks Online.
Also, I'm adding this article to know more about Chart of Accounts: Understand the chart of accounts in QuickBooks.
Please get back to me if you need anything els. I'm here to help. Wish you all the best.