UA 5338 then UA 406 at San Francisco
Fresno → San Francisco → Las Vegas
Timetable, San Francisco time
07:27UA 5338 from Fresno at the gate
21:10UA 406 to Las Vegas leaves the gatealso AC 4025, VA 8562, LH 8940, NZ 9229
13 h 43 apart on the timetable
UA 406 leaves 13 h 43 after UA 5338 arrives on the timetable: more than half a day, so not a connection we count.