Something I've noticed is that if you run Qwen 3.6 35B-A3B (Q8) with a low temperature of 0.4, and leave default reasoning turned on, it will spend quite a lot of time in reasoning/thinking mode. But often it does figure out how to solve something on its own by correcting itself within its reasoning loop before it outputs the final 'answer'.

If you watch the progress of the reasoning in llama-server while it's doing the thinking, you can track its progress. Sometimes the dead ends it goes down or things that it considers and then disregards are themselves something useful to re-prompt it with later, and send it 'rolling downhill', to use the metaphor of another commenter here, in another direction towards the same effort.

Putting 3.6 35B-A3B into a state that lets it spend a lot of time in its reasoning mode before outputting an answer is probably not something that a web based SaaS LLM would tolerate, because it would frustrate many of the non technical end users who want a LLM to spit out an answer now.