AA 4440 then CZ 2502 at O'Hare
Madison → Chicago → Shanghai
Timetable, Chicago time
07:30AA 4440 from Madison at the gate
20:50CZ 2502 to Shanghai leaves the gate
13 h 20 apart on the timetable
CZ 2502 leaves 13 h 20 after AA 4440 arrives on the timetable: more than half a day, so not a connection we count.