AA 4509 then CK 626 at O'Hare
Knoxville → Chicago → Shanghai
Timetable, Chicago time
09:10AA 4509 from Knoxville at the gate
19:27CK 626 to Shanghai leaves the gate
10 h 17 apart on the timetable
The last days
AA 4509 and CK 626 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.