AC 4121 then AC 4332 at San Francisco
Ontario → San Francisco → Santa Ana
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
16:55AC 4332 to Santa Ana leaves the gatealso UA 5597, VA 8493
23 h 05 apart on the timetable, overnight
AC 4332 leaves 23 h 05 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.