BA 142 then B6 2220 at Heathrow
New Delhi → London → New York JFK
Timetable, London time
07:40BA 142 from New Delhi at the gate
07:25B6 2220 to New York JFK leaves the gate
23 h 45 apart on the timetable, overnight
B6 2220 leaves 23 h 45 after BA 142 arrives on the timetable: more than half a day, so not a connection we count.