If I ran their large multi-page website I could search over it for every occurence of "bereavement fare" to find out exactly what we are telling people and chec

If I ran their large multi-page website I could search over it for every occurence of "bereavement fare" to find out exactly what we are telling people and check it for accuracy. I can't do that with a LLM afaik. I can't ask it "tell me every thing you can say about "bereavement fare". LLM's are not inspectable like that. LLMs are tuned and output filtered, but can this catch all errors?