UA 3915 then CA 1056 at O'Hare
Miami → Chicago → Shanghai
Timetable, Chicago time
22:25UA 3915 from Miami at the gate
00:05CA 1056 to Shanghai leaves the gate
1 h 40 apart on the timetable, overnight
The last days
UA 3915 and CA 1056 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.