AA 6486 then DL 2570 at O'Hare
Detroit → Chicago → Boston
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
10:35DL 2570 to Boston leaves the gate
17 h 06 apart on the timetable, overnight
DL 2570 leaves 17 h 06 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.