FR 6723 then BA 461 at Madrid
Marrakesh → Madrid → London Heathrow
Timetable, Madrid time
22:45FR 6723 from Marrakesh at the gate
13:55BA 461 to London Heathrow leaves the gate
15 h 10 apart on the timetable, overnight
BA 461 leaves 15 h 10 after FR 6723 arrives on the timetable: more than half a day, so not a connection we count.