LH 9221 then B6 816 at San Francisco
Sacramento → San Francisco → New York JFK
Timetable, San Francisco time
18:57LH 9221 from Sacramento at the gate
16:25B6 816 to New York JFK leaves the gate
21 h 28 apart on the timetable, overnight
B6 816 leaves 21 h 28 after LH 9221 arrives on the timetable: more than half a day, so not a connection we count.