Moss Bresnahan will become the public television system’s first dual president when he takes over in September at WTVP-TV in Peoria, Ill., and WILL-TV, 90 miles to the east in Urbana-Champaign. He succeeds interim dual General Manager Chet Tomczyk, who delayed his retirement from WTVP to temporarily lead the two stations. Tomczyk has been in charge of WTVP, a community licensee, and WILL, part of the College of Media at the University of Illinois, since September 2013. The unique agreement was designed to foster more collaboration on content between the stations and to save on salary costs. “We have two great stations here, and the staff at each is so dedicated and has such a great legacy,” Bresnahan said in an announcement Friday.