BA 669 then BA 199 at Heathrow
Marrakesh → London → Mumbai
Timetable, London time
20:45BA 669 from Marrakesh at the gate
20:15BA 199 to Mumbai leaves the gate
23 h 30 apart on the timetable, overnight
BA 199 leaves 23 h 30 after BA 669 arrives on the timetable: more than half a day, so not a connection we count.