It seems that the only logical reason for the absence of these 2 since the Shaq trade is a scenario that goes like this.
D'Antoni, "Brian and Dj, you guys actually know how to play defense, so your not gonna play. As for the rest of you, you guys get all the minutes til you figure out how to play like Brian and Dj"
Brian and Dj, "Were being punished for playing defense?"
Brian, "Im gonna work on my 3's after practice"