AA 2407 then DL 8846 at San Francisco
Philadelphia → San Francisco → Salt Lake City
Timetable, San Francisco time
11:35AA 2407 from Philadelphia at the gate
14:35DL 8846 to Salt Lake City leaves the gate
3 h apart on the timetable
The last days
AA 2407 and DL 8846 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.