AA 5642 then AA 5553 at Charlotte
Charleston (South Carolina) → Charlotte → Allentown
Timetable, Charlotte time
10:25AA 5642 from Charleston (South Carolina) at the gate
22:30AA 5553 to Allentown leaves the gate
12 h 05 apart on the timetable
AA 5553 leaves 12 h 05 after AA 5642 arrives on the timetable: more than half a day, so not a connection we count.