AA 3299 then WN 3096 at Phoenix
Burbank → Phoenix → Denver
Timetable, Phoenix time
11:46AA 3299 from Burbank at the gate
12:40WN 3096 to Denver leaves the gate
54 min apart on the timetable
The last days
AA 3299 and WN 3096 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.