DL 1716 then AA 3980 at O'Hare
Detroit → Chicago → Champaign
Timetable, Chicago time
13:59DL 1716 from Detroit at the gate
13:49AA 3980 to Champaign leaves the gate
23 h 50 apart on the timetable, overnight
AA 3980 leaves 23 h 50 after DL 1716 arrives on the timetable: more than half a day, so not a connection we count.