Roman catholicism always presented a problem for the NAZIs. As a center of moral values, it was a challenge to Hitler’s absolute power. Worse! the very teachings were directly opposite to the NAZI ethos and they held the loyalty of many Germans. Clearly, Hitler needed to deal with this.
I had been told that the pope of the day was friendly and indulgent of the new regime. This always struck me as hard to fathom, given the obvious clash of ideology. I thought it more likely the the church was keeping its head low to avoid a military showdown in Rome or a persecution of its German priests or faithful. Nope, wrong on both counts.