AA 938 then AA 5543 at Charlotte
Philadelphia → Charlotte → Pittsburgh
Timetable, Charlotte time
17:00AA 938 from Philadelphia at the gate
08:35AA 5543 to Pittsburgh leaves the gate
15 h 35 apart on the timetable, overnight
AA 5543 leaves 15 h 35 after AA 938 arrives on the timetable: more than half a day, so not a connection we count.