UA 3905 then OZ 6340 at San Francisco
Tokyo Haneda → San Francisco → Las Vegas
Timetable, San Francisco time
16:33UA 3905 from Tokyo Haneda at the gate
08:40OZ 6340 to Las Vegas leaves the gate
16 h 07 apart on the timetable, overnight
OZ 6340 leaves 16 h 07 after UA 3905 arrives on the timetable: more than half a day, so not a connection we count.