UA 3501 then AA 4739 at O'Hare
Detroit → Chicago → Knoxville
Timetable, Chicago time
06:57UA 3501 from Detroit at the gate
21:05AA 4739 to Knoxville leaves the gate
14 h 08 apart on the timetable
AA 4739 leaves 14 h 08 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.