AC 4121 then AC 4168 at San Francisco
Ontario → San Francisco → Salt Lake City
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:28AC 4168 to Salt Lake City leaves the gatealso CA 7246, NH 7302, VA 8445, NZ 9629
18 h 38 apart on the timetable, overnight
AC 4168 leaves 18 h 38 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.