AA 3992 then WN 823 at Phoenix
Burbank → Phoenix → Las Vegas
Timetable, Phoenix time
11:44AA 3992 from Burbank at the gate
16:05WN 823 to Las Vegas leaves the gate
4 h 21 apart on the timetable
The last days
AA 3992 and WN 823 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.