UA 2265 then UA 406 at San Francisco
Denver → San Francisco → Las Vegas
Timetable, San Francisco time
07:49UA 2265 from Denver at the gatealso AC 3333
21:10UA 406 to Las Vegas leaves the gatealso AC 4025, VA 8562, LH 8940, NZ 9229
13 h 21 apart on the timetable
UA 406 leaves 13 h 21 after UA 2265 arrives on the timetable: more than half a day, so not a connection we count.