While the question of whether or not a sequel will actually happen creates a distressing atmosphere, there has never been any question regarding Denis Villeneuve’s commitment to bringing the best possible adaptation of Dune to the big screen, and that’s really on full display here.
We don’t know right now whether or not Dune: Part 2 will actually become a reality, but that hasn’t stopped the filmmaker from preemptively doing the work necessary to ensure that if it does, the two movies will together be seen as a cohesive whole (not to mention the fact that he already has plans for Dune: Messiah as well).