CM 2458 then UA 2282 at San Francisco
Sacramento → San Francisco → Los Angeles
Timetable, San Francisco time
20:00CM 2458 from Sacramento at the gate
17:42UA 2282 to Los Angeles leaves the gatealso NZ 9257
21 h 42 apart on the timetable, overnight
UA 2282 leaves 21 h 42 after CM 2458 arrives on the timetable: more than half a day, so not a connection we count.