UA 6080 then CA 1012 at O'Hare
Sioux City → Chicago → Shanghai
Timetable, Chicago time
07:35UA 6080 from Sioux City at the gate
03:10CA 1012 to Shanghai leaves the gate
19 h 35 apart on the timetable, overnight
CA 1012 leaves 19 h 35 after UA 6080 arrives on the timetable: more than half a day, so not a connection we count.