AA 4293 then UA 3636 at O'Hare
Columbia Metropolitan → Chicago → Knoxville
Timetable, Chicago time
07:33AA 4293 from Columbia Metropolitan at the gate
07:07UA 3636 to Knoxville leaves the gate
23 h 34 apart on the timetable, overnight
UA 3636 leaves 23 h 34 after AA 4293 arrives on the timetable: more than half a day, so not a connection we count.