UA 611 then UA 406 at San Francisco
Portland (Oregon) → San Francisco → Las Vegas
Timetable, San Francisco time
07:22UA 611 from Portland (Oregon) at the gate
21:10UA 406 to Las Vegas leaves the gatealso AC 4025, VA 8562, LH 8940, NZ 9229
13 h 48 apart on the timetable
UA 406 leaves 13 h 48 after UA 611 arrives on the timetable: more than half a day, so not a connection we count.