AA 3655 then CZ 2502 at O'Hare
Columbia Regional → Chicago → Shanghai
Timetable, Chicago time
08:00AA 3655 from Columbia Regional at the gate
20:50CZ 2502 to Shanghai leaves the gate
12 h 50 apart on the timetable
CZ 2502 leaves 12 h 50 after AA 3655 arrives on the timetable: more than half a day, so not a connection we count.