AA 490 then CA 1020 at O'Hare
Philadelphia → Chicago → Shanghai
Timetable, Chicago time
22:30AA 490 from Philadelphia at the gate
19:30CA 1020 to Shanghai leaves the gate
21 h apart on the timetable, overnight
CA 1020 leaves 21 h after AA 490 arrives on the timetable: more than half a day, so not a connection we count.