VS 19 then UA 785 at San Francisco
London → San Francisco → Washington
Timetable, San Francisco time
14:50VS 19 from London at the gatealso NZ 4161, SV 4808, KL 4814, DL 5965, AF 9649
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
15 h 25 apart on the timetable, overnight
UA 785 leaves 15 h 25 after VS 19 arrives on the timetable: more than half a day, so not a connection we count.