BA 585 then BA 183 at Heathrow
Milan Linate → London → New York JFK
Timetable, London time
21:30BA 585 from Milan Linate at the gate
19:20BA 183 to New York JFK leaves the gate
21 h 50 apart on the timetable, overnight
BA 183 leaves 21 h 50 after BA 585 arrives on the timetable: more than half a day, so not a connection we count.