Opinion yes, but the second assessment ("Gutachten") will not examine the accused personally, only the paperwork. In all cases psychiatric assessors will trust their colleagues more than written defenses or observations. Only if the first assessment is internally severely flawed it can be overruled. In most cases the first assessment just ignores any contradicting evidence, so the independent assessors had no chance to find out any contradictions or flaws. It simply is not in the papertrail.

The Gutachten is done directly on the patient if it is so ordered by the judge. It is supposed to be an independent assessment, not even caring what the first assessment was stating. What are you talking about?

If so then good. My wife is psychiatrical assessor in a lot of such cases as 2nd or 3rd assessor, and she never sees the patient. Only paperwork being send around.