UA 5420 then CA 1020 at O'Hare
Milwaukee → Chicago → Shanghai
Timetable, Chicago time
19:40UA 5420 from Milwaukee at the gate
09:10CA 1020 to Shanghai leaves the gate
13 h 30 apart on the timetable, overnight
CA 1020 leaves 13 h 30 after UA 5420 arrives on the timetable: more than half a day, so not a connection we count.