Each request/response pair you make to an LLM goes to a different server, possibly different data centers, possibly different models. There's no stable identity to it. The "neurons" that get fired are simulated, and they're always in different places in memory, or cache, or on entirely different hardware. So the problem with AI is, unlike with a brain, you can't even really get a sensible answer to "ok, what's doing the thinking?" because it moves all the time and services wildly different requests all the time. We can only know for sure that meat is capable of consciousness because we know we ourselves are capable of consciousness and we can generalize that to other meat. However, we have no natural analogs of consciousness that lacks locality and stable identity.
Basically, if you really think LLM's are conscious, the onus is on you to prove it, it's not on me to disprove it.