There are many highly networked systems in biology where we know computation occurs, but we rarely consider it because we don't consider it intelligent. The casual example is fungal networks, but those don't hold a candle to the level of networking in a plant body thanks to plasmodesma.
the whole conversation around intelligence has been great, but it's mostly reminded me of how lacking and myopic our considerations of what intelligence actually is. The recent chapter of the saga has been great in terms of goal post movers, but I feel like we're no closer to a coherent definition of intelligence other than 'ill know it when I see it'. My prediction from this recent spat is that we'll have AGI before we know it, we won't know it as or recognize it as AGI, it won't fit convenient definitions, we'll have almost no clue how, and definitely no clue why it works, and we still mostly won't agree if it's intelligence or not. Effectively, it feels as if right now we're arguing about whether or not automobiles are horses, and laughing about how silly it is they can't do some of the things horses can do. Sure, but it all seems rather besides the point.