UA 4466 then CA 3174 at O'Hare
Springfield Branson National → Chicago → Guangzhou
Timetable, Chicago time
16:55UA 4466 from Springfield Branson National at the gate
13:40CA 3174 to Guangzhou leaves the gate
20 h 45 apart on the timetable, overnight
CA 3174 leaves 20 h 45 after UA 4466 arrives on the timetable: more than half a day, so not a connection we count.