The European Encyclopedia Network seems to be closely related or overlapping to activities of a group of national encyclopedias from (mostly) Europe and also a few northern American countries with conferences in 2022 and 2020. Videos of some of the presentations have been published at
https://www.youtube.com/@leksikografski-zavod/videos.
To me personally, it is a shame that - best of my knowledge - no local chapter has ever been in touch with them before, but the decental nature of Wikipedia could also mean that no news of a contact ever reached my ear (shame on me then in that case).
Mathias