AA 3515 then UA 3636 at O'Hare
Appleton → Chicago → Knoxville
Timetable, Chicago time
08:40AA 3515 from Appleton at the gate
07:07UA 3636 to Knoxville leaves the gate
22 h 27 apart on the timetable, overnight
UA 3636 leaves 22 h 27 after AA 3515 arrives on the timetable: more than half a day, so not a connection we count.