BA 461 then BA 1334 at Heathrow
Madrid → London → Newcastle
Timetable, London time
15:20BA 461 from Madrid at the gate
14:40BA 1334 to Newcastle leaves the gate
23 h 20 apart on the timetable, overnight
BA 1334 leaves 23 h 20 after BA 461 arrives on the timetable: more than half a day, so not a connection we count.