VB 186 then CA 1020 at O'Hare
Mexico City → Chicago → Shanghai
Timetable, Chicago time
23:35VB 186 from Mexico City at the gate
19:30CA 1020 to Shanghai leaves the gate
19 h 55 apart on the timetable, overnight
CA 1020 leaves 19 h 55 after VB 186 arrives on the timetable: more than half a day, so not a connection we count.