AC 4121 then UA 832 at San Francisco
Ontario → San Francisco → Santa Ana
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
14:41UA 832 to Santa Ana leaves the gate
20 h 51 apart on the timetable, overnight
UA 832 leaves 20 h 51 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.