While the critic he mentioned sorted Kill Bill: Vol. 1 and Vol. 2 into two separate works for purposes of that hypothesis, Tarantino still mentions that he sees it as a single movie.
Quentin Tarantino has never been shy about the fact that he views his own filmography as a solid unit of movie-making finesse.
As of right now, he’s sticking firm with the fact that he’s got two good films left in him.
Then he could have the western front, his ragey street crime trilogy, his war epics, and a single, three-part samurai series.