UA 2472 then CA 3104 at O'Hare
Fort Myers → Chicago → Shanghai
Timetable, Chicago time
16:42UA 2472 from Fort Myers at the gate
11:40CA 3104 to Shanghai leaves the gate
18 h 58 apart on the timetable, overnight
CA 3104 leaves 18 h 58 after UA 2472 arrives on the timetable: more than half a day, so not a connection we count.