The penultimate layer of the LLM could be thought of as the one that figures out ‘given S1..Sn, what concept am I trying to express now?’. The final layer is the function from that to ‘what token should I output next’.

The fact that the LLM has to figure that all out again from scratch as part of generating every token, rather than maintaining a persistent ‘plan’, doesn’t make the essence of what it’s doing any different from what you claim you’re doing.