AA 9953 then AA 1597 at Philadelphia
Dayton → Philadelphia → Charleston (South Carolina)
Timetable, Philadelphia time
09:39AA 9953 from Dayton at the gate
21:49AA 1597 to Charleston (South Carolina) leaves the gate
12 h 10 apart on the timetable
AA 1597 leaves 12 h 10 after AA 9953 arrives on the timetable: more than half a day, so not a connection we count.