WN 477 then UA 2619 at Phoenix
Boise → Phoenix → San Diego
Timetable, Phoenix time
10:40WN 477 from Boise at the gate
11:20UA 2619 to San Diego leaves the gate
40 min apart on the timetable
The last days
WN 477 and UA 2619 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.