AA 3304 then CA 3174 at O'Hare
Miami → Chicago → Guangzhou
Timetable, Chicago time
19:55AA 3304 from Miami at the gate
13:40CA 3174 to Guangzhou leaves the gate
17 h 45 apart on the timetable, overnight
CA 3174 leaves 17 h 45 after AA 3304 arrives on the timetable: more than half a day, so not a connection we count.