AA 3575 then CZ 2502 at O'Hare
Springfield Branson National → Chicago → Shanghai
Timetable, Chicago time
15:30AA 3575 from Springfield Branson National at the gate
13:55CZ 2502 to Shanghai leaves the gate
22 h 25 apart on the timetable, overnight
CZ 2502 leaves 22 h 25 after AA 3575 arrives on the timetable: more than half a day, so not a connection we count.