BA 1347 then DL 2 at Heathrow
Saint Helier → London → New York JFK
Timetable, London time
11:50BA 1347 from Saint Helier at the gate
10:10DL 2 to New York JFK leaves the gate
22 h 20 apart on the timetable, overnight
DL 2 leaves 22 h 20 after BA 1347 arrives on the timetable: more than half a day, so not a connection we count.