AM 682 then CA 1018 at O'Hare
Mexico City → Chicago → Shanghai
Timetable, Chicago time
23:39AM 682 from Mexico City at the gate
22:35CA 1018 to Shanghai leaves the gate
22 h 56 apart on the timetable, overnight
CA 1018 leaves 22 h 56 after AM 682 arrives on the timetable: more than half a day, so not a connection we count.