AS 9729 then CA 3174 at O'Hare
Cincinnati Northern Kentucky → Chicago → Guangzhou
Timetable, Chicago time
18:59AS 9729 from Cincinnati Northern Kentucky at the gate
13:40CA 3174 to Guangzhou leaves the gate
18 h 41 apart on the timetable, overnight
CA 3174 leaves 18 h 41 after AS 9729 arrives on the timetable: more than half a day, so not a connection we count.