WN 3271 then UA 785 at San Francisco
Las Vegas → San Francisco → Washington
Timetable, San Francisco time
14:35WN 3271 from Las Vegas at the gate
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
15 h 40 apart on the timetable, overnight
UA 785 leaves 15 h 40 after WN 3271 arrives on the timetable: more than half a day, so not a connection we count.