DL 9966 then DL 922 at Seattle
Seoul → Seattle → Anchorage
Timetable, Seattle time
07:10DL 9966 from Seoul at the gate
10:35DL 922 to Anchorage leaves the gate
3 h 25 apart on the timetable
Seattle’s board gives a departure time for only about 57% of its flights, so many days show no gate time.
The last days
DL 9966 and DL 922 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.