B6 633 then VA 8118 at San Francisco
Boston → San Francisco → Las Vegas
Timetable, San Francisco time
09:59B6 633 from Boston at the gate
08:35VA 8118 to Las Vegas leaves the gate
22 h 36 apart on the timetable, overnight
VA 8118 leaves 22 h 36 after B6 633 arrives on the timetable: more than half a day, so not a connection we count.