UA 2185 then CA 3174 at O'Hare
Burlington (BTV) → Chicago → Guangzhou
Timetable, Chicago time
18:53UA 2185 from Burlington (BTV) at the gate
13:40CA 3174 to Guangzhou leaves the gate
18 h 47 apart on the timetable, overnight
CA 3174 leaves 18 h 47 after UA 2185 arrives on the timetable: more than half a day, so not a connection we count.