VA 8576 then BA 284 at San Francisco
Las Vegas → San Francisco → London
Timetable, San Francisco time
19:03VA 8576 from Las Vegas at the gate
17:25BA 284 to London leaves the gatealso IB 3625, AS 5278, AY 5524, AA 6995, EI 8984
22 h 22 apart on the timetable, overnight
BA 284 leaves 22 h 22 after VA 8576 arrives on the timetable: more than half a day, so not a connection we count.