CM 235 then CA 1018 at O'Hare
Tocumen → Chicago → Shanghai
Timetable, Chicago time
02:11CM 235 from Tocumen at the gate
03:00CA 1018 to Shanghai leaves the gate
49 min apart on the timetable
The last days
CM 235 and CA 1018 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.