AS 634 then UA 1284 at San Francisco
Las Vegas → San Francisco → Newark
Timetable, San Francisco time
17:41AS 634 from Las Vegas at the gatealso QF 3697, FJ 5841, AA 7412, CX 7935, QR 8861
14:00UA 1284 to Newark leaves the gatealso VA 8563
20 h 19 apart on the timetable, overnight
UA 1284 leaves 20 h 19 after AS 634 arrives on the timetable: more than half a day, so not a connection we count.