AA 4516 then CZ 428 at O'Hare
Washington National → Chicago → Shanghai
Timetable, Chicago time
23:36AA 4516 from Washington National at the gate
21:25CZ 428 to Shanghai leaves the gate
21 h 49 apart on the timetable, overnight
CZ 428 leaves 21 h 49 after AA 4516 arrives on the timetable: more than half a day, so not a connection we count.