UA 3908 then CA 1018 at O'Hare
Fort Myers → Chicago → Shanghai
Timetable, Chicago time
14:19UA 3908 from Fort Myers at the gate
03:10CA 1018 to Shanghai leaves the gate
12 h 51 apart on the timetable, overnight
CA 1018 leaves 12 h 51 after UA 3908 arrives on the timetable: more than half a day, so not a connection we count.