AA 6102 then AA 6002 at Charlotte
Harrisburg → Charlotte → Huntsville
Timetable, Charlotte time
17:19AA 6102 from Harrisburg at the gate
17:00AA 6002 to Huntsville leaves the gate
23 h 41 apart on the timetable, overnight
AA 6002 leaves 23 h 41 after AA 6102 arrives on the timetable: more than half a day, so not a connection we count.