WS 6161 then WN 2386 at San Francisco
Mexico City → San Francisco → Las Vegas
Timetable, San Francisco time
12:38WS 6161 from Mexico City at the gate
10:05WN 2386 to Las Vegas leaves the gate
21 h 27 apart on the timetable, overnight
WN 2386 leaves 21 h 27 after WS 6161 arrives on the timetable: more than half a day, so not a connection we count.