Bonhoeffer was in the unenviable position of trying to break a spell. The spell was the Nazi crisis, where the totalitarian state threatened the church, and yet to many, seemed to be saving the culture and nation from mortal dangers.
As with many teachings, the Lutheran teaching on Mutual Conversation and Consolation of the Brethren fits in with other teachings. The various teachings don’t stand alone, but they fit together as an organic whole.