From The Daily Beast:

The problem is, splitting cable creates the very real possibility that Burke could end up losing both Hammer and Zalaznick—and potentially Gaspin and Shell as well. A second source close to NBCU says the power pair would rather leave the company than split anything between them. There is, however, another scenario being seriously considered at Comcast's Philadelphia headquarters that would satisfy the ambitions of Hammer and Zalaznick. Under this plan, Hammer would get the broadcast network and Zalaznick would control all of cable, as well as the combined company's digital operations.