UA 402 then CA 3174 at O'Hare
Jacksonville → Chicago → Guangzhou
Timetable, Chicago time
17:29UA 402 from Jacksonville at the gate
13:40CA 3174 to Guangzhou leaves the gate
20 h 11 apart on the timetable, overnight
CA 3174 leaves 20 h 11 after UA 402 arrives on the timetable: more than half a day, so not a connection we count.