AA 9915 then WN 156 at Phoenix
Salt Lake City → Phoenix → Las Vegas
Timetable, Phoenix time
10:40AA 9915 from Salt Lake City at the gate
15:30WN 156 to Las Vegas leaves the gate
4 h 50 apart on the timetable
The last days
AA 9915 and WN 156 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.