UA 3501 then AA 4940 at O'Hare
Detroit → Chicago → Nashville
Timetable, Chicago time
06:57UA 3501 from Detroit at the gate
21:00AA 4940 to Nashville leaves the gate
14 h 03 apart on the timetable
AA 4940 leaves 14 h 03 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.