Leo Burnett DDB is losing two top executives. DDB North American chief creative officer Britt Nolan is moving on after nearly two years and is expected to rejoin Publicis Groupe's Leo Burnett as chief creative officer and president of the Chicago office, according to people familiar with the matter. Diane Jackson, who has been with DDB Chicago for 14 years, most recently as chief production officer, is also moving on to join Facebook’s global business marketing team as its director, global head of production. DDB and Facebook weren’t immediately available for comment. More Nolan’s move is major news in the Chicago ad market, where he is highly respected and has been widely coveted. He was considered a major get for the Omnicom Group agency two years ago and he arrived at the same time Ari Weiss was promoted to global chief creative officer. Nolan rose through the ranks at Leo Burnett and was known for work on clients including Allstate, including its iconic “Mayhem” campaign. He was promoted to the U.S. chief creative officer in 2016 and ascended the ranks again in early 2019 when he added the title of co-president of Leo Burnett's Chicago office. He returns to the agency with nearly the same exact title, except he will have the president’s title to himself.