WN 856 then WN 397 at Phoenix
Burbank → Phoenix → Sacramento
Timetable, Phoenix time
12:15WN 856 from Burbank at the gate
16:05WN 397 to Sacramento leaves the gate
3 h 50 apart on the timetable
The last days
WN 856 and WN 397 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.