DL 2804 then QR 76 at O'Hare
Boston → Chicago → Milan
Timetable, Chicago time
22:36DL 2804 from Boston at the gate
14:45QR 76 to Milan leaves the gate
16 h 09 apart on the timetable, overnight
QR 76 leaves 16 h 09 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.