The components would physically break down before you finished processing even one second's worth of a real LLM's operations. Same with trying to model a human brain.
If you want to imagine it magically works anyway, you could, again, do the same with a human brain.
If you had enough resources, you could run an LLM on a wooden system of gears and diesel power. It would be massive, but watching the gears and levers move, it would be evident that the outputs are not the result of a mind. Part of the illusion of LLMs is the tiny scale of GPUs.