UA 6080 then CA 8412 at O'Hare
Sioux City → Chicago → Shanghai
Timetable, Chicago time
07:35UA 6080 from Sioux City at the gate
22:15CA 8412 to Shanghai leaves the gate
14 h 40 apart on the timetable
CA 8412 leaves 14 h 40 after UA 6080 arrives on the timetable: more than half a day, so not a connection we count.