NEW YORK — DirecTV is walking away from plans to buy Dish Network over a failed debt-exchange offer, although some analysts expect the satellite TV providers will return to the deal table given the potential for billions of dollars in synergies. Satellite operator EchoStar, which owns Dish, said in a Nov. 22 regulatory filing that DirecTV had notified the company that it would be terminating the deal at 11:59 pm Eastern. Dish bondholders needed to agree to swap their existing debt for new debt issued by the merged entity at…
