I understand the connecting of either a parent or child account in order to reconcile.  What I'm trying to confirm is the difference in say Capital One vs.  Amex.  Let's say there is 1 parent and 3 sub-cards.  With American Express, I could connect the children.  But with Capital One, I believe you can essentially only connect the parent).   That's what I'm trying to confirm.  It looks like this has been addressed in the past: https://quickbooks.intuit.com/learn-support/en-us/banking/can-you-connect-three-capital-one-credit-c... The response here says "different account numbers" which I'm trying to confirm means different parent account numbers.   Aka, is there anyone out there who has been successful connecting children accounts for a Capital One card?