BA 256 then BA 1334 at Heathrow
New Delhi → London → Newcastle
Timetable, London time
15:15BA 256 from New Delhi at the gate
14:25BA 1334 to Newcastle leaves the gate
23 h 10 apart on the timetable, overnight
BA 1334 leaves 23 h 10 after BA 256 arrives on the timetable: more than half a day, so not a connection we count.