CM 2528 then UA 543 at San Francisco
Ontario → San Francisco → Las Vegas
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
14:20UA 543 to Las Vegas leaves the gatealso AC 3886, NZ 9222
18 h 10 apart on the timetable, overnight
UA 543 leaves 18 h 10 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.