B6 333 then KQ 7281 at San Francisco
Boston → San Francisco → New York JFK
Timetable, San Francisco time
00:25B6 333 from Boston at the gatealso FI 7897, EY 8015, EY 8328
12:30KQ 7281 to New York JFK leaves the gate
12 h 05 apart on the timetable
KQ 7281 leaves 12 h 05 after B6 333 arrives on the timetable: more than half a day, so not a connection we count.