I wasn't saying it was plagiarism per se, because a lot of movies borrow plots and tropes from other movies. The time element itself was a lot like Kubrick's "The Killing", in which the race track robbery was shown at various points out of order (and "The Killing" had similarities to "The Asphalt Jungle"). However, I do think Tarantino is basically a film nerd who is too imitative of other films and filmmakers to be truly original.
I've never seen "Rosencrantz & Guildenstern", but I would think it was derived from Hamlet?
Yes, it’s derived from Hamlet, but it just takes those 2 characters and basically gives you 90 minutes of them having a conversation, with no other real relation to the rest of the play and no action or development except for the character development you get to watch along the course of their dialogue.