AA 5825 then AA 6002 at Charlotte
Knoxville → Charlotte → Huntsville
Timetable, Charlotte time
17:36AA 5825 from Knoxville at the gate
17:00AA 6002 to Huntsville leaves the gate
23 h 24 apart on the timetable, overnight
AA 6002 leaves 23 h 24 after AA 5825 arrives on the timetable: more than half a day, so not a connection we count.