UA 5691 then CA 3174 at O'Hare
Appleton → Chicago → Guangzhou
Timetable, Chicago time
18:37UA 5691 from Appleton at the gate
17:25CA 3174 to Guangzhou leaves the gate
22 h 48 apart on the timetable, overnight
CA 3174 leaves 22 h 48 after UA 5691 arrives on the timetable: more than half a day, so not a connection we count.