BA 493 then VS 25 at Heathrow
Gibraltar → London → New York JFK
Timetable, London time
20:50BA 493 from Gibraltar at the gate
20:10VS 25 to New York JFK leaves the gate
23 h 20 apart on the timetable, overnight
VS 25 leaves 23 h 20 after BA 493 arrives on the timetable: more than half a day, so not a connection we count.