Second and third order effects not second and third follow ups. You're done. You've said what needed to be said to them. Either someone else will see what you said and benefit, or they'll think about what you said a few years from now.

Little article on second and third order effects: https://www.weskao.com/blog/second-and-third-order-consequences

The only thing that's left is the work that always needs done. Work on yourself. I mean that in the sense that everyone has to work on themselves always. Work on explaining things clearly, work on understanding what the other side was saying so that you can better address those issues. Things like that.