BA 875 then BA 1338 at Heathrow
Bucharest → London → Newcastle
Timetable, London time
17:55BA 875 from Bucharest at the gate
16:05BA 1338 to Newcastle leaves the gate
22 h 10 apart on the timetable, overnight
BA 1338 leaves 22 h 10 after BA 875 arrives on the timetable: more than half a day, so not a connection we count.