DL 4190 then DL 1954 at Salt Lake City
Aspen → Salt Lake City → Phoenix Sky Harbor
Timetable, Salt Lake City time
15:07DL 4190 from Aspen at the gate
17:40DL 1954 to Phoenix Sky Harbor leaves the gate
2 h 33 apart on the timetable
The last days
DL 4190 and DL 1954 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.