AA 3153 then AA 6445 at Charlotte
Omaha → Charlotte → Knoxville
Timetable, Charlotte time
16:38AA 3153 from Omaha at the gate
15:35AA 6445 to Knoxville leaves the gate
22 h 57 apart on the timetable, overnight
AA 6445 leaves 22 h 57 after AA 3153 arrives on the timetable: more than half a day, so not a connection we count.