UA 643 then AS 3356 at San Francisco
Las Vegas → San Francisco → Palm Springs
Timetable, San Francisco time
07:44UA 643 from Las Vegas at the gatealso AC 5211, NH 7315, VA 8122, NZ 9237
19:52AS 3356 to Palm Springs leaves the gatealso QR 3360, QF 3793, BA 6413, QR 8856, AA 9330
12 h 08 apart on the timetable
AS 3356 leaves 12 h 08 after UA 643 arrives on the timetable: more than half a day, so not a connection we count.