Well, Gazprom changed ownership of Gazprom Germania without any approval from German government. So, apparently, it's not impossible that they would be able to do other things as well.
changing company structure while the assets remain in Germany (in fact they are immobile) is peanuts. Pretend change.
If they (the Russians) had tried to vent Germany’s gas reserves (which wont happen because the employees are German) to kneecap them (the Germans), then you would have seen the German regulator do something.
If they (the Russians) had tried to vent Germany’s gas reserves (which wont happen because the employees are German) to kneecap them (the Germans), then you would have seen the German regulator do something.