AA 542 then CA 3174 at O'Hare
Washington National → Chicago → Guangzhou
Timetable, Chicago time
19:56AA 542 from Washington National at the gate
13:40CA 3174 to Guangzhou leaves the gate
17 h 44 apart on the timetable, overnight
CA 3174 leaves 17 h 44 after AA 542 arrives on the timetable: more than half a day, so not a connection we count.