AA 2976 then UA 3636 at O'Hare
Minneapolis → Chicago → Knoxville
Timetable, Chicago time
07:14AA 2976 from Minneapolis at the gate
07:07UA 3636 to Knoxville leaves the gate
23 h 53 apart on the timetable, overnight
UA 3636 leaves 23 h 53 after AA 2976 arrives on the timetable: more than half a day, so not a connection we count.