BA 1473 then BA 668 at Heathrow
Glasgow → London → Marrakesh
Timetable, London time
10:20BA 1473 from Glasgow at the gate
07:45BA 668 to Marrakesh leaves the gate
21 h 25 apart on the timetable, overnight
BA 668 leaves 21 h 25 after BA 1473 arrives on the timetable: more than half a day, so not a connection we count.