AA 4293 then CZ 2502 at O'Hare
Columbia Metropolitan → Chicago → Shanghai
Timetable, Chicago time
07:33AA 4293 from Columbia Metropolitan at the gate
20:50CZ 2502 to Shanghai leaves the gate
13 h 17 apart on the timetable
CZ 2502 leaves 13 h 17 after AA 4293 arrives on the timetable: more than half a day, so not a connection we count.