"...Augsburg...the cathedral...."


Yes, it is beautiful. Very Catholic; built on the site of an earlier church going back to the 4th century. During the Reformation, the Lutherans took a lot of the art work from there, plundering it, but cathedral people got a lot of it back. (Not sure of your "switch around"!)

And yes "let change happen ... that is the liminal space where...." Most accuracies, theological or scientific, aren't born yet, so to speak. We are a work in progress, as it were, reaching out for the ultimate, seeking clarifications (doctrinal developments [Newman]) not yet "worked out" on our theological scales. But still there are daily  differences that do separate the two churches, very real and have to be worked out like gay marriages, for one. That comes to mind. Lutherans there bless same sex unions in their churches, ordain LGBT candidates for ministry, permit ordained clerics to live in civil unions. The CC still hasn't worked that out, biblically or theologically.