UA 3905 then AS 718 at San Francisco
Tokyo Haneda → San Francisco → Las Vegas
Timetable, San Francisco time
16:33UA 3905 from Tokyo Haneda at the gate
10:00AS 718 to Las Vegas leaves the gatealso QR 2140, QR 2176, CX 7932, AA 9434
17 h 27 apart on the timetable, overnight
AS 718 leaves 17 h 27 after UA 3905 arrives on the timetable: more than half a day, so not a connection we count.