AC 4121 then UA 60 at San Francisco
Ontario → San Francisco → Melbourne
Timetable, San Francisco time
10:55AC 4121 from Ontario at the gate
23:35UA 60 to Melbourne leaves the gatealso LX 3086, VA 8002, LH 8920
12 h 40 apart on the timetable
UA 60 leaves 12 h 40 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.