If you had disagreements don’t let them see it was an issue or deal breaker!
Of course don’t get sentimental and make your past collaboration with your boss look like a romantic story.
Obviously, that’s one step too far.
The message that you want to get through is that you are a respectful person!
Imagine 5 years from now, they could be your ex managers, right?
If you criticize your ex boss, they will often sympathize more with the boss than with you.
If you criticize past colleagues, what they hear is “Difficult person to work with” or “problem maker”.
Stay clear and express genuine respect!