Like his early mentors Joachim Camerarius and Victorinus Strigel, Monau initially identified with the Philippist Lutheran faction although, like many Philippists, in time he moved toward a Reformed Protestant theological position.
The Leipzig Interim was harder enforce on the Catholic side than the Augsburg interim, and caused a split in the Protestant side between Philippists and Gnesio-Lutherans, the so-called adiaphora controversies.