IB 983 then BY 356 at Gatwick
Madrid → London → Agadir
Timetable, London time
10:50IB 983 from Madrid at the gate
08:50BY 356 to Agadir leaves the gate
22 h apart on the timetable, overnight
BY 356 leaves 22 h after IB 983 arrives on the timetable: more than half a day, so not a connection we count.