UA 1603 then AC 4370 at San Francisco
Las Vegas → San Francisco → Reno
Timetable, San Francisco time
19:03UA 1603 from Las Vegas at the gatealso AC 3072, LX 3126, AC 3335
18:55AC 4370 to Reno leaves the gate
23 h 52 apart on the timetable, overnight
AC 4370 leaves 23 h 52 after UA 1603 arrives on the timetable: more than half a day, so not a connection we count.