Pope Paul VI accepted the non magisterial version of the Council and Archbishop Marcel Lefebvre rejected it. Both were using the false premise

 The liberals, Lefbvrists, Thucs and Feeneyites in general only know of the non magisterial interpretation of Vatican Council II, which is the interpretation of the popes since Paul VI to Francis.They confuse the non magisterial interpretation as being magisterial. Since, they do not know of the rational premise, inference and conclusion.

So with their false premise there is a rupture with the past Magisterium.Now they have to go back to Tradition and side step Vatican Council II non magisterial.

Pope Paul VI accepted the non magisterial version of the Council and Archbishop Marcel Lefebvre rejected it. Both were using the false premise. -Lionel Andrades