The URL returns a HTTP 4xx for me, can you reproduce that?

Right now, it works for me, both the page as well as the linked datasets. 🤷

Ah, seems like my browser tried to force HTTPS, which (of course 🙄) doesn't work on that site 😄

Regarding the feed itself: If I understand correctly, it only includes trains operated by SNCB (Belgian state railways)? If so, the feed would not meet the criteria in our readme, but I will leave this issue open for documentation purposes:

There should only be one feed per country. This feed should also have the scope to (at least eventually) cover the entire country. A counter-example for this would be feeds limited to a specific operator, since such a feed would - by definition - always exclude additional data. Feeds that are not 100% complete but have the scope to cover the whole country eventually are acceptable, though. If some country doesn't have a global feed (yet), you're encouraged to describe the current situation in a new issue.