AA 4775 then CZ 2504 at O'Hare
Madison → Chicago → Shanghai
Timetable, Chicago time
06:14AA 4775 from Madison at the gate
19:15CZ 2504 to Shanghai leaves the gate
13 h 01 apart on the timetable
CZ 2504 leaves 13 h 01 after AA 4775 arrives on the timetable: more than half a day, so not a connection we count.