AA 5634 then AA 5543 at Charlotte
Louisville → Charlotte → Pittsburgh
Timetable, Charlotte time
14:36AA 5634 from Louisville at the gate
08:35AA 5543 to Pittsburgh leaves the gate
17 h 59 apart on the timetable, overnight
AA 5543 leaves 17 h 59 after AA 5634 arrives on the timetable: more than half a day, so not a connection we count.