I'm still not clear what you mean by a consciousness "beyond" the aggregates, given that consciousness is itself an aggregate.
You are confused because of different understanding of the word 'Consciousness'. Can experience of void happen without consciousness?
You are confused because the Sanskrit word used in original sutras is vijnana (vinnana in Pali) and not consciousness, as translated most commonly. Consciousness in its non dual root aspect is called prajnana in Sanskrit (panna in Pali).
Vijnana is a compound word made of vi (divided) and jnana (knowledge). Prajnana is made of pra (pre) and jnana (knowledge). Vijnana and prajnana both together constitute the principle of awareness/consciousness.
Is experience of void possible in absence of a jnana (knowledge) principle being inherent in the void?