ridiculously hard to comprehend, I don't think I can do this
--holy cow, are you serious right now?
--I can understand you but I wish you'd go away
--wow, this is basic speech!
I think that Faulkner did this intentionally to 1) grab our attention as a reader 2) force us to really search for the little details and 3) relay a theme of time
It has an interesting affect on the narration because the varying complication of each, reveals something about the character. The most interesting thing to me was that the novel started with Benjy, three days before Christ's death and ended with Dilsy's 3rd person narration, right around the time of Easter. I think that this novel is truly about the absurd "values" of the Old South and needed shift to the values of New South, which is manifested as Caddy.
I think the Macbeth quote "[life] is a tale told by an idiot, signifying nothing." is a perfect symbol of the abstract meaning of the novel as a whole. It encompasses why Faulkner used various characters to tell the story of the Compson family.