DL 1412 then AS 9921 at San Francisco
Seattle → San Francisco → Honolulu
Timetable, San Francisco time
13:15DL 1412 from Seattle at the gatealso VS 1901, SK 3926, AF 5741
17:00AS 9921 to Honolulu leaves the gate
3 h 45 apart on the timetable
The last days
DL 1412 and AS 9921 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.