UA 2721 then AV 2163 at San Francisco
Las Vegas → San Francisco → Los Angeles
Timetable, San Francisco time
19:58UA 2721 from Las Vegas at the gatealso AC 3335, NZ 9239
19:51AV 2163 to Los Angeles leaves the gate
23 h 53 apart on the timetable, overnight
AV 2163 leaves 23 h 53 after UA 2721 arrives on the timetable: more than half a day, so not a connection we count.