AA 2917 then CA 3174 at O'Hare
Miami → Chicago → Guangzhou
Timetable, Chicago time
18:23AA 2917 from Miami at the gate
13:40CA 3174 to Guangzhou leaves the gate
19 h 17 apart on the timetable, overnight
CA 3174 leaves 19 h 17 after AA 2917 arrives on the timetable: more than half a day, so not a connection we count.