TK 1979 then BA 668 at Heathrow
Istanbul → London → Marrakesh
Timetable, London time
09:45TK 1979 from Istanbul at the gate
07:35BA 668 to Marrakesh leaves the gate
21 h 50 apart on the timetable, overnight
BA 668 leaves 21 h 50 after TK 1979 arrives on the timetable: more than half a day, so not a connection we count.