F9 2858 then UA 1546 at LAX
San Francisco → Los Angeles → Las Vegas
Timetable, Los Angeles time
22:54F9 2858 from San Francisco at the gate
22:42UA 1546 to Las Vegas leaves the gate
23 h 48 apart on the timetable, overnight
UA 1546 leaves 23 h 48 after F9 2858 arrives on the timetable: more than half a day, so not a connection we count.