BA 951 then BA 1336 at Heathrow
Munich → London → Newcastle
Timetable, London time
18:30BA 951 from Munich at the gate
18:10BA 1336 to Newcastle leaves the gate
23 h 40 apart on the timetable, overnight
BA 1336 leaves 23 h 40 after BA 951 arrives on the timetable: more than half a day, so not a connection we count.