1. After the credit card is cancelled, the online banking will not be cancelled. Because your online banking has other registered accounts (debit card accounts), online banking can still be used normally, and there is no impact.

2. After the credit card is cancelled, the credit card account no longer exists. As for whether this account will be displayed on online banking, I haven't tried and I'm not sure. But even if there is information, it can be deleted through the function of canceling the registration card on the online banking. Now that the card has not been cancelled, you can cancel the registered account of the credit card at present, or you can do it yourself.