How to interact with difficult supervisors after graduation? I submitted my dissertation after several years of working. I will have my defense soon, and I reported what I am going to talk in the defense. However, my primary supervisor now refuses to give further advice or comments because he said he had spent a lot of time editing my dissertation. In addition to that, he also asks me to refrain from interacting with my second supervisor because the latter person also spent a lot of time for my doctoral dissertation.
I am not on good terms with my primary supervisor. He is fed up with me because it was very hard for him to supervise me. With my second supervisor I am on good terms personally, to the degree that he likes to invite me to have some coffee. However, since it seems that he is reluctant to advise any people, he might want to cut ties with me as well.

My question is, how I should interact wisely with these people, especially after my graduation. I do not need their advice for the moment because I can prepare for the defense by myself. However, I may be going to feel awkward if they will cut academic ties with me. I am not sure what exactly will make me so; however, I think I should not cut the ties because I see that most PhD holders around me still interact with their former supervisors.

For your information, I am an international student from Asia in a European country and going to work at a university in my home country after getting a doctorate. My supervisors are leading scholars in our small field in humanities. So, I will have some opportunities in which my papers will be reviewed by them.
Sounds like their issue is that they don't want to spend more time on your defense. They don't have an issue with talking to you in general. So just prepare your defense without asking for help from the supervisors which don't want to help. After you graduate, feel free to write back as you normally would. Just not about the defense.

Just as a remark, I don't get how your other supervisor wants to help you but your main supervisor doesn't want you to ask his help. Presumably the other guy is a free adult, and can make his own decisions. If he agrees to help you, why would your main supervisor object? It's not taking any of his time, and if your defense is better and makes you more likely to graduate, that's good for him too.