UA 2 then WN 1625 at San Francisco
Singapore → San Francisco → Los Angeles
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
10:10WN 1625 to Los Angeles leaves the gate
55 min apart on the timetable
The last days
UA 2 and WN 1625 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.