AA 1138 then CA 3174 at O'Hare
Atlanta → Chicago → Guangzhou
Timetable, Chicago time
18:10AA 1138 from Atlanta at the gate
13:40CA 3174 to Guangzhou leaves the gate
19 h 30 apart on the timetable, overnight
CA 3174 leaves 19 h 30 after AA 1138 arrives on the timetable: more than half a day, so not a connection we count.