When I added my burgessi, he initially went at it with my bicolor angel and became king of the tank. I recently added a whitetail tang and he went at it with the burgessi (and bicolor) and is now king of the tank. Interesting thing is that my burgessi is the biggest consumer of nori (actually of all the food) in my tank, which I didn't expect. Maybe that's why there's the aggression (they see each other as competitors for the same food sources).
Keep an eye on that burgessi as mine picked at a small RBTA I had (which I then removed) but left my larger RBTA alone. But then when the larger RBTA split, he picked at both of the smaller splits (which stressed them out and one split again). I've been removing them as I can, but do not plan on keeping them in the tank with the burgessi anymore.