UA 3772 then UA 573 at San Francisco
Las Vegas → San Francisco → Denver
Timetable, San Francisco time
22:05UA 3772 from Las Vegas at the gate
20:23UA 573 to Denver leaves the gatealso AC 4081
22 h 18 apart on the timetable, overnight
UA 573 leaves 22 h 18 after UA 3772 arrives on the timetable: more than half a day, so not a connection we count.