BA 669 then BA 990 at Heathrow
Marrakesh → London → Berlin
Timetable, London time
20:45BA 669 from Marrakesh at the gate
16:55BA 990 to Berlin leaves the gate
20 h 10 apart on the timetable, overnight
BA 990 leaves 20 h 10 after BA 669 arrives on the timetable: more than half a day, so not a connection we count.