Does it make sense to speak of "Universal Consciousness" or "Universal Intelligence"?

[Angrboda]

Now, at some point, you are going to argue that our gradually degraded brain is no longer capable of sustaining sufficient complexity to be said to be mindful, right? So let me ask you a question-- is there a specific line at which this will be said, or is it a gradual degradation that extends right down to a minimallly sufficient level of complexity?

Neither. Consciousness is likely a product of multiple systems working together. If you remove components, you impair consciousness (e.g. cortical color blindness or hemineglect). If you disable the integration, the parts may remain, but the whole will be degraded (eg. split-brain subjects, blindsight).