AC 8481 then CZ 2502 at O'Hare
Montréal → Chicago → Shanghai
Timetable, Chicago time
15:02AC 8481 from Montréal at the gate
13:55CZ 2502 to Shanghai leaves the gate
22 h 53 apart on the timetable, overnight
CZ 2502 leaves 22 h 53 after AC 8481 arrives on the timetable: more than half a day, so not a connection we count.