AS 767 then WN 4721 at Seattle
Tucson → Seattle → Oakland
Timetable, Seattle time
08:37AS 767 from Tucson at the gate
11:05WN 4721 to Oakland leaves the gate
2 h 28 apart on the timetable
Seattle’s board gives a departure time for only about 56% of its flights, so many days show no gate time.
The last days
AS 767 and WN 4721 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.