AA 3199 then WN 3846 at San Francisco
Phoenix → San Francisco → Las Vegas
Timetable, San Francisco time
14:01AA 3199 from Phoenix at the gate
21:00WN 3846 to Las Vegas leaves the gate
6 h 59 apart on the timetable
The last days
AA 3199 and WN 3846 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.