AA 5564 then AA 6007 at Charlotte
Harrisburg → Charlotte → Huntsville
Timetable, Charlotte time
18:46AA 5564 from Harrisburg at the gate
18:10AA 6007 to Huntsville leaves the gate
23 h 24 apart on the timetable, overnight
AA 6007 leaves 23 h 24 after AA 5564 arrives on the timetable: more than half a day, so not a connection we count.