AM 682 then CA 8448 at O'Hare
Mexico City → Chicago → Shanghai
Timetable, Chicago time
23:39AM 682 from Mexico City at the gate
03:10CA 8448 to Shanghai leaves the gate
3 h 31 apart on the timetable, overnight
The last days
AM 682 and CA 8448 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.