Y4 2734 then CM 2535 at San Francisco
Las Vegas → San Francisco → Reno
Timetable, San Francisco time
17:09Y4 2734 from Las Vegas at the gatealso F9 4157
20:45CM 2535 to Reno leaves the gate
3 h 36 apart on the timetable
The last days
Y4 2734 and CM 2535 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.