Fluidity and collaboration go hand in hand. It is difficult to collaborate, for example, when one party can operate freely and openly and the other is bound down by limitations of various kinds. The result of such an awkward dance will tend to not be balanced. Integration will tend to be poor. The net result will not be fully satisfying.
As an example, think of a duet by two musicians, but the second of the two can only play half of the notes that are available to the other. It is doubtful that they would be able to trade melodies in the process. Harmonies will surely be restricted as well. The performers will need to concentrate not only on what each can to, but on what they cannot. This brain overload with detract from the ability to make music otherwise. Full expression will be absent. The experience will similarly be less satisfying.