AA 4516 then CZ 2502 at O'Hare
Washington National → Chicago → Shanghai
Timetable, Chicago time
23:36AA 4516 from Washington National at the gate
13:55CZ 2502 to Shanghai leaves the gate
14 h 19 apart on the timetable, overnight
CZ 2502 leaves 14 h 19 after AA 4516 arrives on the timetable: more than half a day, so not a connection we count.