WN 2523 then WN 42 at Phoenix
Denver → Phoenix → San Diego
Timetable, Phoenix time
11:30WN 2523 from Denver at the gate
15:15WN 42 to San Diego leaves the gate
3 h 45 apart on the timetable
The last days
WN 2523 and WN 42 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.