AA 490 then CZ 2508 at O'Hare
Philadelphia → Chicago → Shanghai
Timetable, Chicago time
22:30AA 490 from Philadelphia at the gate
20:50CZ 2508 to Shanghai leaves the gate
22 h 20 apart on the timetable, overnight
CZ 2508 leaves 22 h 20 after AA 490 arrives on the timetable: more than half a day, so not a connection we count.