UA 2494 then CA 3104 at O'Hare
Fort Myers → Chicago → Shanghai
Timetable, Chicago time
14:43UA 2494 from Fort Myers at the gate
11:40CA 3104 to Shanghai leaves the gate
20 h 57 apart on the timetable, overnight
CA 3104 leaves 20 h 57 after UA 2494 arrives on the timetable: more than half a day, so not a connection we count.