AA 5643 then AA 1586 at Charlotte
Savannah → Charlotte → Charleston (South Carolina)
Timetable, Charlotte time
17:58AA 5643 from Savannah at the gate
17:30AA 1586 to Charleston (South Carolina) leaves the gate
23 h 32 apart on the timetable, overnight
AA 1586 leaves 23 h 32 after AA 5643 arrives on the timetable: more than half a day, so not a connection we count.