UA 370 then CA 3174 at O'Hare
Phoenix → Chicago → Guangzhou
Timetable, Chicago time
22:58UA 370 from Phoenix at the gate
13:40CA 3174 to Guangzhou leaves the gate
14 h 42 apart on the timetable, overnight
CA 3174 leaves 14 h 42 after UA 370 arrives on the timetable: more than half a day, so not a connection we count.