AA 4648 then CZ 436 at O'Hare
Grand Rapids → Chicago → Shanghai
Timetable, Chicago time
14:44AA 4648 from Grand Rapids at the gate
00:45CZ 436 to Shanghai leaves the gate
10 h 01 apart on the timetable, overnight
The last days
AA 4648 and CZ 436 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.