WN 770 then WN 899 at Phoenix
Boise → Phoenix → Salt Lake City
Timetable, Phoenix time
14:30WN 770 from Boise at the gate
20:05WN 899 to Salt Lake City leaves the gate
5 h 35 apart on the timetable
The last days
WN 770 and WN 899 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.