The people investigating this claim that much of this is undocumented. I don't speak Polish nor have access to any of the primary documentation for the train.

The people investigating this claim that much of this is undocumented. I don't speak Polish nor have access to any of the primary documentation for the train. We may see more info next week as they are scheduled to present at the 37th CCC. https://events.ccc.de/congress/2023/infos/index.html https://events.ccc.de/congress/2023/infos/index.html Q3k is active here, https://news.ycombinator.com/threads?id=q3k https://news.ycombinator.com/threads?id=q3k