Hi,
No, that is also not possible. Comments need to be tied up to a content item -> ad, video, article. Displaying them outside of the page with that item doesn't make a lot of sense to me. Most of the time you are commenting because you've read an article, watched a video. If we were to send you to another page just to see the comments and to comment there... why use comments? One can add a kunena thread plugin. The plugin will create a link to the forum thread and the user can comment there... I don't think that the usability suffers with such solutions.
Kind regards,
Daniel