UA 928 then CA 3104 at O'Hare
London → Chicago → Shanghai
Timetable, Chicago time
16:55UA 928 from London at the gate
11:40CA 3104 to Shanghai leaves the gate
18 h 45 apart on the timetable, overnight
CA 3104 leaves 18 h 45 after UA 928 arrives on the timetable: more than half a day, so not a connection we count.