Only the North and East of Oder and Glatzer Neisse have areas of Polish majority after the Hussite Wars, the Poles there were kind to both Habsburgs and Jagiellonians and majority Catholic - the area north and east of Oder and Glatzer Neisse stays Ethnically Polish and Catholic while the Germans in Silesia stay catholic, having it majority Catholic both Germans and Polish Population, is it also possible for a partition of Bohemia to happen between a Catholic Polish and German Silesia and Lusatia and Protestant Bohemia-Moravia like in way as Netherlands, what would be the consequences.
Could we see Bohemia partitioned between the Catholic Germans, Poles and Protestant Czechs and Protestant Germans in the 30 years war, Silesia and Lusatia stays with the Habsburgs - A branch of the Habsburgs that later Polonizes, will rule Silesia and Lusatia while Bohemia and Moravia goes to the elected King.