UA 4534 then CA 3174 at O'Hare
Tulsa → Chicago → Guangzhou
Timetable, Chicago time
20:00UA 4534 from Tulsa at the gate
13:40CA 3174 to Guangzhou leaves the gate
17 h 40 apart on the timetable, overnight
CA 3174 leaves 17 h 40 after UA 4534 arrives on the timetable: more than half a day, so not a connection we count.