EI 172 then BA 1338 at Heathrow
Dublin → London → Newcastle
Timetable, London time
16:50EI 172 from Dublin at the gate
16:05BA 1338 to Newcastle leaves the gate
23 h 15 apart on the timetable, overnight
BA 1338 leaves 23 h 15 after EI 172 arrives on the timetable: more than half a day, so not a connection we count.