I used to work for TUV SUD. I was told their contract with their designating authority (ZLG) requires they follow NBOG guidances. It is probably the same for all German notified bodies. This particular one was sent to me from our BSI scheme manager and they seem to apply NBOG guidances. Not sure about all the other notified bodies. I think that in general NBOG guidances hold more weight as they are enforced by the designating authority. Team-NB is a voluntary professional organization with no enforcement authority.