UA 8167 then BA 7545 at San Francisco
Newark → San Francisco → Seattle
Timetable, San Francisco time
15:29UA 8167 from Newark at the gate
20:58BA 7545 to Seattle leaves the gate
5 h 29 apart on the timetable
The last days
UA 8167 and BA 7545 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.