UA 448 then UA 785 at San Francisco
Vancouver → San Francisco → Washington
Timetable, San Francisco time
15:27UA 448 from Vancouver at the gatealso CM 1125, AC 3283, AC 3449, NZ 9878
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
14 h 48 apart on the timetable, overnight
UA 785 leaves 14 h 48 after UA 448 arrives on the timetable: more than half a day, so not a connection we count.