BA 831 then BA 1334 at Heathrow
Dublin → London → Newcastle
Timetable, London time
14:35BA 831 from Dublin at the gate
14:25BA 1334 to Newcastle leaves the gate
23 h 50 apart on the timetable, overnight
BA 1334 leaves 23 h 50 after BA 831 arrives on the timetable: more than half a day, so not a connection we count.