AC 4121 then UA 2467 at San Francisco
Ontario → San Francisco → Newark
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:05UA 2467 to Newark leaves the gatealso VA 8149, NZ 9114
18 h 15 apart on the timetable, overnight
UA 2467 leaves 18 h 15 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.