AA 5550 then AA 5543 at Charlotte
Detroit → Charlotte → Pittsburgh
Timetable, Charlotte time
12:25AA 5550 from Detroit at the gate
08:35AA 5543 to Pittsburgh leaves the gate
20 h 10 apart on the timetable, overnight
AA 5543 leaves 20 h 10 after AA 5550 arrives on the timetable: more than half a day, so not a connection we count.