AC 4121 then AC 4532 at San Francisco
Ontario → San Francisco → Sacramento
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:30AC 4532 to Sacramento leaves the gatealso UA 4790, VA 8237, NZ 9696
18 h 40 apart on the timetable, overnight
AC 4532 leaves 18 h 40 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.