AV 2046 then UA 301 at San Francisco
Arcata → San Francisco → Denver
Timetable, San Francisco time
09:13AV 2046 from Arcata at the gate
21:24UA 301 to Denver leaves the gatealso AC 3598, VA 8346, NZ 9055
12 h 11 apart on the timetable
UA 301 leaves 12 h 11 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.