

A non-aggression pact can be just that. This one also included additional provisions, such as dividing Poland between them. When you’re carving up Poland together and shaking hands at the pre-set dividing line, it’s not really reaching very far to say the two countries in question are aligned. They were certainly aligned when it came to dividing Poland.
I wanted to give them the benefit of the doubt since their tone seemed to be changing a bit during the discussion, but it turned out it was just the old “that didn’t happen and even if it did” thing.