AA 6486 then UA 1606 at O'Hare
Detroit → Chicago → Boston
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
10:42UA 1606 to Boston leaves the gate
17 h 13 apart on the timetable, overnight
UA 1606 leaves 17 h 13 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.