AA 6491 then WN 899 at Phoenix
Grand Junction → Phoenix → Salt Lake City
Timetable, Phoenix time
13:50AA 6491 from Grand Junction at the gate
20:05WN 899 to Salt Lake City leaves the gate
6 h 15 apart on the timetable
The last days
AA 6491 and WN 899 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.