"Worked in concert" means worked altogether toward the same goal. When some high officials of the church are helping to load boxcars heading for Auschwitz, and some are busy collating and stapling documents to help the SS track down jews, And some are signing away the rights of the moderate catholic centrist party in germany to exist, it is pretty hard for you to believably claim that "they were all working in concert", now isn't it?
I have here frequently acknowledged that the catholic church helped save a fraction of the jews it worked hard for 1400 years to put at risk. And I now do so once again, secure in the knowledge that there will be no responsible reciprocal response from catholicism's defenders cruising on automatic.