For good order: my sad refers to the second bit of this post.I was now also able to find that information on the page of the fan club for German pairs skating, which also cites Hase/Volodin having skated their SP outside of competition at Nationals.
Unfortunately, we weren't able to see them on the stream and even more unfortunate that they were unable to get the same special allowance to compete at Nationals as Efimova/Blommaert last season.