(Telecompaper) WarnerMedia has confirmed it is restructuring the company, reorganising teams around entertainment networks, live programming, content production and affiliate and advertising sales. The company has also confirmed a number of key executive appointments. NBC Entertainment chairman Robert Greenblatt will become the chairman of WarnerMedia Entertainment and Direct-to-Consumer. Greenblatt's responsibilities will include HBO, the linear cable networks TNT, TBS and truTV, and the Direct-to-Consumer business. He replaces Richard Piepler, who announced his resignation earlier this week.