DL 1716 then AA 3554 at O'Hare
Detroit → Chicago → Jacksonville
Timetable, Chicago time
13:59DL 1716 from Detroit at the gate
13:29AA 3554 to Jacksonville leaves the gate
23 h 30 apart on the timetable, overnight
AA 3554 leaves 23 h 30 after DL 1716 arrives on the timetable: more than half a day, so not a connection we count.