New York—Ad agency veteran Jon Mandel joined media giant VNU as CEO of NielsenConnect, a new business unit. VNU said NielsenConnect would draw information from the dozens of VNU divisions, such as ACNielsen and Nielsen Media Research, and package it in new ways for clients. Mandel joins VNU from WPP Group’s Group M, where he was chief of strategic solutions. Before that, he was chairman of MediaCom U.S., a Group M company. Group M reportedly has no plans to name a successor to Mandel.