UA 8264 then OO 356 at San Francisco
Houston → San Francisco → Reno
Timetable, San Francisco time
15:49UA 8264 from Houston at the gate
16:31OO 356 to Reno leaves the gate
42 min apart on the timetable
The last days
UA 8264 and OO 356 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.