UA 504 then VA 8287 at San Francisco
Baltimore → San Francisco → Seattle
Timetable, San Francisco time
21:45UA 504 from Baltimore at the gate
21:05VA 8287 to Seattle leaves the gate
23 h 20 apart on the timetable, overnight
VA 8287 leaves 23 h 20 after UA 504 arrives on the timetable: more than half a day, so not a connection we count.