AA 2304 then CK 626 at O'Hare
Washington National → Chicago → Shanghai
Timetable, Chicago time
07:27AA 2304 from Washington National at the gate
00:01CK 626 to Shanghai leaves the gate
16 h 34 apart on the timetable, overnight
CK 626 leaves 16 h 34 after AA 2304 arrives on the timetable: more than half a day, so not a connection we count.