"However, the market also strongly emphasised that the benefit would only rise if there was a complete and clean break between Toll and the new company," he said. "Both Toll and Asciano Ltd will be subject to new obligations that are designed to facilitate a complete and clan break between the two companies. "These obligations will prohibit joint ventures and across shareholdings between Toll and Asciano." Asciano is the holding company for Patrick and Pacific National. The ACCC said Toll directors Paul Little and Mark Rowsthorn, the later who was the proposed managing director of Asciano, would sell down their existing interests in the other company.