AC 4517 then UA 3917 at San Francisco
Santa Ana → San Francisco → Las Vegas
Timetable, San Francisco time
20:10AC 4517 from Santa Ana at the gatealso NZ 9698
16:45UA 3917 to Las Vegas leaves the gate
20 h 35 apart on the timetable, overnight
UA 3917 leaves 20 h 35 after AC 4517 arrives on the timetable: more than half a day, so not a connection we count.