AC 4121 then DL 8846 at San Francisco
Ontario → San Francisco → Salt Lake City
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
14:35DL 8846 to Salt Lake City leaves the gate
20 h 45 apart on the timetable, overnight
DL 8846 leaves 20 h 45 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.