AA 5434 then AA 2509 at Charlotte
Allentown → Charlotte → Chicago O'Hare
Timetable, Charlotte time
14:56AA 5434 from Allentown at the gate
14:54AA 2509 to Chicago O'Hare leaves the gate
23 h 58 apart on the timetable, overnight
AA 2509 leaves 23 h 58 after AA 5434 arrives on the timetable: more than half a day, so not a connection we count.