A quick advanced search in the MBTA forum about your question would give you answers to your questions instead of starting a new topic. But yes, Keolis dispatches and maintains the Worcester Line from COVE (exclusive)-CP 45 (exclusive)
Dispatching for entire MBTA CR is described under the "dispatcher" definition in the glossary: http://dbperry.weebly.com/glossary" onclick="window.open(this.href);return false;