AA 2612 then CZ 436 at O'Hare
Houston → Chicago → Shanghai
Timetable, Chicago time
20:22AA 2612 from Houston at the gate
19:25CZ 436 to Shanghai leaves the gate
23 h 03 apart on the timetable, overnight
CZ 436 leaves 23 h 03 after AA 2612 arrives on the timetable: more than half a day, so not a connection we count.