AA 5275 then AA 5406 at Charlotte
Harrisburg → Charlotte → Knoxville
Timetable, Charlotte time
19:34AA 5275 from Harrisburg at the gate
19:30AA 5406 to Knoxville leaves the gate
23 h 56 apart on the timetable, overnight
AA 5406 leaves 23 h 56 after AA 5275 arrives on the timetable: more than half a day, so not a connection we count.