I actually watched Silence first, then the other two, so naturally it can be done. I wasn't overly impressed with any film in the trilogy, just thought Bergman was taking himself far too seriously at that point, and the subtle philosphical journey of his fifties work was suddenly overwrought with excessive melancholy. I would like to watch them again, particularly the Silence, but I wouldn't hold them in as high esteem. Perhaps it was because I was a little heavy on Bergman at the time (I think Through a Glass Darkly and Winter Light were among 8 Bergman films I watched in a weekend).