From the Catholic side, some of its positions can and will develop and change. Other understandings, such as the Catholic position on abortion, will not be reversed, but possibly can develop and become more nuanced through the dialogue. Yes, it does. In fact, any exclusion of ideas based on commitment to previous positions is a positive cultivation of ignorance. Where this exclusion is systematically promoted, a university becomes the producer of propaganda.
Endorsement is another matter.
Endorsement of a position means that I stand behind and promote what is being articulated. I can certainly read or listen to something without endorsing it. In fact, very often I have the obligation to do so. Not at all. In my case just the opposite is true.