AC 4121 then UA 1939 at San Francisco
Ontario → San Francisco → Orlando
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:35UA 1939 to Orlando leaves the gatealso AD 7018, CA 7324, NH 7346, NZ 9291
18 h 45 apart on the timetable, overnight
UA 1939 leaves 18 h 45 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.