BA 669 then AY 1338 at Heathrow
Marrakesh → London → Helsinki
Timetable, London time
19:50BA 669 from Marrakesh at the gate
18:10AY 1338 to Helsinki leaves the gate
22 h 20 apart on the timetable, overnight
AY 1338 leaves 22 h 20 after BA 669 arrives on the timetable: more than half a day, so not a connection we count.