AA 880 then CA 1020 at O'Hare
Philadelphia → Chicago → Shanghai
Timetable, Chicago time
12:19AA 880 from Philadelphia at the gate
08:17CA 1020 to Shanghai leaves the gate
19 h 58 apart on the timetable, overnight
CA 1020 leaves 19 h 58 after AA 880 arrives on the timetable: more than half a day, so not a connection we count.