UA 4601 then CA 1016 at O'Hare
St Louis → Chicago → Shanghai
Timetable, Chicago time
11:16UA 4601 from St Louis at the gate
23:30CA 1016 to Shanghai leaves the gate
12 h 14 apart on the timetable
CA 1016 leaves 12 h 14 after UA 4601 arrives on the timetable: more than half a day, so not a connection we count.