UA 643 then UA 519 at San Francisco
Las Vegas → San Francisco → Reno
Timetable, San Francisco time
07:44UA 643 from Las Vegas at the gatealso AC 5211, NH 7315, VA 8122, NZ 9237
20:40UA 519 to Reno leaves the gatealso LX 3342
12 h 56 apart on the timetable
UA 519 leaves 12 h 56 after UA 643 arrives on the timetable: more than half a day, so not a connection we count.