AF 2152 then SK 3961 at San Francisco
New York JFK → San Francisco → Los Angeles
Timetable, San Francisco time
01:15AF 2152 from New York JFK at the gate
20:50SK 3961 to Los Angeles leaves the gate
19 h 35 apart on the timetable
SK 3961 leaves 19 h 35 after AF 2152 arrives on the timetable: more than half a day, so not a connection we count.