AA 6486 then DL 1716 at O'Hare
Detroit → Chicago → Detroit
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
14:44DL 1716 to Detroit leaves the gate
21 h 15 apart on the timetable, overnight
DL 1716 leaves 21 h 15 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.