I mean, how do you figure that Nynaeve should have replicated that rather than develop Healing.



Given that nothing would compel someone to channel within minutes of being Healed, the only way for this to be Healing like Nynaeve is if you for some reason assume that these people would start accessing the Taint even without channeling. This assertion is not credible, therefore, Ishamael was saying that the madness could not be Healed.


But a very critical variable had changed. The taint was no longer around when Nynaeve healed Naeff.



Erm, no. There is nothing in the text that contradicts the idea that Aes Sedai were only capable of supressing the effects of the madness without being capable of Healing the madness itself.



Actually, it is a severely flawed analogy because you presume the subject will be immediately breathing again, which is correct. However, there is no reason that a Healed male channeler would start channeling again within minutes, nor is there any reason to believe that even if those few minutes were constantly spent channeling that it would drive men to a point of madness which has always been shown to require extended and constant use of saidin.