AA 6067 then AA 6018 at Charlotte
Huntsville → Charlotte → Knoxville
Timetable, Charlotte time
09:44AA 6067 from Huntsville at the gate
09:10AA 6018 to Knoxville leaves the gate
23 h 26 apart on the timetable, overnight
AA 6018 leaves 23 h 26 after AA 6067 arrives on the timetable: more than half a day, so not a connection we count.