AA 9919 then AA 3315 at Phoenix
Tucson → Phoenix → Las Vegas
Timetable, Phoenix time
12:15AA 9919 from Tucson at the gate
12:31AA 3315 to Las Vegas leaves the gate
16 min apart on the timetable
The last days
AA 9919 and AA 3315 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.