UA 3402 then QR 76 at O'Hare
Detroit → Chicago → Milan
Timetable, Chicago time
16:50UA 3402 from Detroit at the gate
14:45QR 76 to Milan leaves the gate
21 h 55 apart on the timetable, overnight
QR 76 leaves 21 h 55 after UA 3402 arrives on the timetable: more than half a day, so not a connection we count.