AA 4544 then CZ 436 at O'Hare
Tulsa → Chicago → Shanghai
Timetable, Chicago time
21:44AA 4544 from Tulsa at the gate
18:50CZ 436 to Shanghai leaves the gate
21 h 06 apart on the timetable, overnight
CZ 436 leaves 21 h 06 after AA 4544 arrives on the timetable: more than half a day, so not a connection we count.