CZ 1604 then UA 1995 at San Francisco
Los Angeles → San Francisco → Las Vegas
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
19:00UA 1995 to Las Vegas leaves the gatealso LX 3307, AC 3942, AZ 4490, NZ 9220, LH 9228
19 h 20 apart on the timetable, overnight
UA 1995 leaves 19 h 20 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.