UA 5402 then VA 8384 at San Francisco
Seattle → San Francisco → Washington
Timetable, San Francisco time
23:00UA 5402 from Seattle at the gatealso NZ 9422
22:55VA 8384 to Washington leaves the gate
23 h 55 apart on the timetable, overnight
VA 8384 leaves 23 h 55 after UA 5402 arrives on the timetable: more than half a day, so not a connection we count.