you cannot have an anarchist structure trying to co-exist along side a central government structure. Eventually, the central government will overwhelm the anarchist, especially the first time something goes wrong
You cannot have an anarchist structure full stop. It will always encounters a larger government as they expand and get destroyed by it, since the anarchist structure will always be smaller and less powerful because it’s not an expansionist structure.
https://www.youtube.com/watch?v=jO90ullM3FQ