I believe we previously found that the divide on this question was to some extent semantic. "Negotiation" -
discussion aimed at reaching an agreement - sounds like something active. It implies a possible suspension and resumption of agreement, rather than a continuation of ongoing agreement. Consider this -
Jo and Addy negotiate on Monday about who will empty the dustbin for the rest of the week. They agree to take turns, starting with Jo. On Tuesday, they do not "negotiate" who will empty the dustbin, although surely Jo's ongoing agreement is in play in their doing so.
Versus
Jo and Addy negotiate on Monday about who will empty the dustbin for the rest of the week. They agree to take turns, starting with Jo. On Tuesday, Jo negotiates who will empty the dustbin. To Addy, Jo has forgotten what they agreed... re-entering negotiation implies that Jo might be going to propose a change to their earlier agreement.
Folk can judge whether those two contrived worlds match what they meant by negotiation, and where there are differences. I give this example in order to advocate that posters spell out what they mean. That is, to describe what they picture happening at the table, potentially including their expectations about the thought processes of those involved.