UA 1990 then CA 3174 at O'Hare
Austin → Chicago → Guangzhou
Timetable, Chicago time
19:55UA 1990 from Austin at the gate
13:40CA 3174 to Guangzhou leaves the gate
17 h 45 apart on the timetable, overnight
CA 3174 leaves 17 h 45 after UA 1990 arrives on the timetable: more than half a day, so not a connection we count.