Anyone like to comment on why only Spanish operators landed during that time?
According to AvHerald:
Beginning 19:52Z until 20:48Z a number of aircraft on approach to Madrid aborted their approaches and went around including all non-Spanish operators, except for
eight flights of Spanish only operators which continued their flights for landings on Madrid's runways 18. The Aviation Herald is still monitoring these flights, that landed between 19:52Z and 20:10Z.