BA 827 then BA 1338 at Heathrow
Dublin → London → Newcastle
Timetable, London time
16:25BA 827 from Dublin at the gate
16:05BA 1338 to Newcastle leaves the gate
23 h 40 apart on the timetable, overnight
BA 1338 leaves 23 h 40 after BA 827 arrives on the timetable: more than half a day, so not a connection we count.