AA 3476 then F9 1748 at Phoenix
Lexington → Phoenix → Denver
Timetable, Phoenix time
09:25AA 3476 from Lexington at the gate
10:09F9 1748 to Denver leaves the gate
44 min apart on the timetable
The last days
AA 3476 and F9 1748 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.