AA 1913 then F9 1748 at Phoenix
Sacramento → Phoenix → Denver
Timetable, Phoenix time
08:56AA 1913 from Sacramento at the gate
10:09F9 1748 to Denver leaves the gate
1 h 13 apart on the timetable
The last days
AA 1913 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.