KE 3643 then AC 4162 at San Francisco
Atlanta → San Francisco → Salt Lake City
Timetable, San Francisco time
10:26KE 3643 from Atlanta at the gatealso MU 8849
16:15AC 4162 to Salt Lake City leaves the gatealso UA 4649, VA 8444, LH 8944
5 h 49 apart on the timetable
The last days
KE 3643 and AC 4162 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.