Is your understanding that it should be possible to completely or almost completely eliminate the pain-suffering connection? If so, do you believe that any humans have actually achieved that?
I don’t have enough information to answer with any higher confidence than “maybe” to the first question. (For the second, I don’t know what it would mean in practice for it to be a thing that’s possible, but which no human has achieved—if nobody has managed to achieve it yet, including any of the monks who have the option of spending basically all their waking hours meditating, then it seems to be impossible for all practical intents and purposes.)
I don’t have enough information to answer with any higher confidence than “maybe” to the first question. (For the second, I don’t know what it would mean in practice for it to be a thing that’s possible, but which no human has achieved—if nobody has managed to achieve it yet, including any of the monks who have the option of spending basically all their waking hours meditating, then it seems to be impossible for all practical intents and purposes.)