CA 7381 then UA 573 at San Francisco
Los Angeles → San Francisco → Denver
Timetable, San Francisco time
07:30CA 7381 from Los Angeles at the gate
20:23UA 573 to Denver leaves the gatealso AC 4081
12 h 53 apart on the timetable
UA 573 leaves 12 h 53 after CA 7381 arrives on the timetable: more than half a day, so not a connection we count.