is consciouness delusion?

Question: If consciousness brings about separate “things,” then isn’t consciousness delusion? If so, are the enlightened unconscious? Obviously not, but how can consciousness and enlightenment coexist in our experience?

Response to Q1: Consciousness doesn't "bring about" anything other than appearances.  It is Illusion, not delusion.  Delusion is to take appearances as substantial.
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Response to Q2: There isn't anything that is unconscious.  For that matter, there isn't anything that is conscious, either.  Consciousness is the "fabric" of Reality.  It is of Totality.  Mind.
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Response to Q3: Enlightenment is seeing the Illusory nature of consciousness—which is not to say that consciousness is an illusion.