AA 6576 then AA 1597 at Philadelphia
Allentown → Philadelphia → Charleston (South Carolina)
Timetable, Philadelphia time
09:45AA 6576 from Allentown at the gate
21:49AA 1597 to Charleston (South Carolina) leaves the gate
12 h 04 apart on the timetable
AA 1597 leaves 12 h 04 after AA 6576 arrives on the timetable: more than half a day, so not a connection we count.