AA 975 then CZ 2502 at O'Hare
Montego Bay → Chicago → Shanghai
Timetable, Chicago time
19:46AA 975 from Montego Bay at the gate
13:55CZ 2502 to Shanghai leaves the gate
18 h 09 apart on the timetable, overnight
CZ 2502 leaves 18 h 09 after AA 975 arrives on the timetable: more than half a day, so not a connection we count.