KD 313 then CZ 2504 at O'Hare
Anchorage → Chicago → Shanghai
Timetable, Chicago time
18:16KD 313 from Anchorage at the gate
19:15CZ 2504 to Shanghai leaves the gate
59 min apart on the timetable
The last days
KD 313 and CZ 2504 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.