Trying To Get Promoted

After getting a great review as a senior manager, my old boss was asked to work for one of his peers to help him get promoted to director. He agreed to do that, but then his new boss kept him out of the loop on all of the team's projects and operations and pretty much ignored him since he wanted to run his teams hands-on without anyone else being involved. After this went on for a few months, my old boss finally gave up and quit. This was after it became clear that he wasn't going to be able to accomplish anything in his new department and the entire department leadership was only interested in his new boss being promoted to director and didn't care about him being left with nothing to do.