AS 613 then AF 2673 at San Francisco
Las Vegas → San Francisco → Salt Lake City
Timetable, San Francisco time
12:16AS 613 from Las Vegas at the gatealso QR 2995, QF 3750, AA 7419
17:04AF 2673 to Salt Lake City leaves the gatealso KL 6745
4 h 48 apart on the timetable
The last days
AS 613 and AF 2673 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.