Media Relations Publicis and Omnicom won’t merge after all After a huge announcement last July, the two agency giants said ‘difficulties completing the transaction in a reasonable timeframe’ has led them to part ways. By Matt WilsonMay 9, 2014 SHARE Ragan Insider Premium Content To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.