SN 8817 then Y4 2484 at San Francisco
Washington → San Francisco → Los Angeles
Timetable, San Francisco time
21:29SN 8817 from Washington at the gate
21:27Y4 2484 to Los Angeles leaves the gatealso F9 2858
23 h 58 apart on the timetable, overnight
Y4 2484 leaves 23 h 58 after SN 8817 arrives on the timetable: more than half a day, so not a connection we count.