For what it's worth, I placed an order for a roll of UN54 and P400 with the ORWO online store. It's expensive, but I wanted to do it as a test. I wasn't expecting much, but a month later, it arrived in my hands. Turns out that it shipped from a small warehouse in Hamburg.
The UN54 at least is not fresh, it is dated for 3/26, like what B&H had in stock. P400 was either made Dec 2025 or Dec 2024 based off the expiration date of 12/26. Nonetheless that is the latest expiration date I've seen from ORWO film that isn't NC200.
The misprintings on the P400 box are pretty egregious, yikes.
I'm thinking of emailing the shop and seeing when fresh UN54 will come in stock. If I hear anything I will report back.