After you file

Yeah, when I open my turbo tax app the first this I see is Total 2021 Taxes Due $422. It's just weird because I paid/owed $745 and on my state return I am getting back $323. The difference between those totals is $422. I guess that's just a coincidence? I already paid the $745 so why do I owe more? I guess that's what I don't understand.