AC 4121 then OO 377 at San Francisco
Ontario → San Francisco → Salt Lake City
Timetable, San Francisco time
10:55AC 4121 from Ontario at the gate
10:38OO 377 to Salt Lake City leaves the gate
23 h 43 apart on the timetable, overnight
OO 377 leaves 23 h 43 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.