WN 3497 then WN 8822 at Phoenix
Seattle → Phoenix → San Diego
Timetable, Phoenix time
21:40WN 3497 from Seattle at the gate
22:17WN 8822 to San Diego leaves the gate
37 min apart on the timetable
The last days
WN 3497 and WN 8822 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.