UA 3752 then UA 519 at San Francisco
Denver → San Francisco → Reno
Timetable, San Francisco time
13:00UA 3752 from Denver at the gate
20:40UA 519 to Reno leaves the gatealso LX 3342
7 h 40 apart on the timetable
The last days
UA 3752 and UA 519 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.