AA 2612 then CA 3174 at O'Hare
Houston → Chicago → Guangzhou
Timetable, Chicago time
20:10AA 2612 from Houston at the gate
13:40CA 3174 to Guangzhou leaves the gate
17 h 30 apart on the timetable, overnight
CA 3174 leaves 17 h 30 after AA 2612 arrives on the timetable: more than half a day, so not a connection we count.