UA 367 then LA 7046 at San Francisco
Washington → San Francisco → Boston
Timetable, San Francisco time
01:29UA 367 from Washington at the gatealso LH 7530, VA 8388, NZ 9181
12:40LA 7046 to Boston leaves the gate
11 h 11 apart on the timetable
The last days
UA 367 and LA 7046 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.