UA 2492 then UA 406 at San Francisco
Los Angeles → San Francisco → Las Vegas
Timetable, San Francisco time
07:30UA 2492 from Los Angeles at the gatealso NH 7357, VA 8059
21:10UA 406 to Las Vegas leaves the gatealso AC 4025, VA 8562, LH 8940, NZ 9229
13 h 40 apart on the timetable
UA 406 leaves 13 h 40 after UA 2492 arrives on the timetable: more than half a day, so not a connection we count.