AA 4711 then CA 3174 at O'Hare
Des Moines → Chicago → Guangzhou
Timetable, Chicago time
21:13AA 4711 from Des Moines at the gate
13:40CA 3174 to Guangzhou leaves the gate
16 h 27 apart on the timetable, overnight
CA 3174 leaves 16 h 27 after AA 4711 arrives on the timetable: more than half a day, so not a connection we count.