AA 2437 then AA 1409 at Charlotte
Pittsburgh → Charlotte → Chicago O'Hare
Timetable, Charlotte time
09:35AA 2437 from Pittsburgh at the gate
07:35AA 1409 to Chicago O'Hare leaves the gate
22 h apart on the timetable, overnight
AA 1409 leaves 22 h after AA 2437 arrives on the timetable: more than half a day, so not a connection we count.