AA 9975 then AA 1529 at Philadelphia
Roanoke → Philadelphia → Las Vegas
Timetable, Philadelphia time
15:24AA 9975 from Roanoke at the gate
18:05AA 1529 to Las Vegas leaves the gate
2 h 41 apart on the timetable
The last days
AA 9975 and AA 1529 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.