AA 1333 then CA 8414 at O'Hare
Philadelphia → Chicago → Shanghai
Timetable, Chicago time
23:30AA 1333 from Philadelphia at the gate
20:45CA 8414 to Shanghai leaves the gate
21 h 15 apart on the timetable, overnight
CA 8414 leaves 21 h 15 after AA 1333 arrives on the timetable: more than half a day, so not a connection we count.