B6 616 then VS 48 at JFK
San Francisco → New York → London Heathrow
Timetable, New York time
07:24B6 616 from San Francisco at the gate
20:20VS 48 to London Heathrow leaves the gate
12 h 56 apart on the timetable
VS 48 leaves 12 h 56 after B6 616 arrives on the timetable: more than half a day, so not a connection we count.