I can only repeat the criticism made by others in this forum. The translation from english to german was really awful, i.e., not a even one sentence was translated correctly. Many of the translations weren't just slightly off but could only be understood when translated back to english (word by word) to get the meaning.
The german lady on the other hand, spoke super clear, very slow, and very unnatural, almost like a computer herself. She obviously spoke carefully selected phrases. In essence, this demo has shown nothing at all and I'm curious about the final product in particular when it comes to languages that are more different than english and german.