As the Mystery of Missing Malaysian Airlines Flight MH370 mystery dragged on, Fox News Channel continued its hold on primetime BillWeirThursday in the news demo (391,000) with CNN a competitive No. 2 (321,000) followed, not closely, by MSNBC (166,000) and HLN (128,000). Piers Morgan Live, hosted by possible Morgan replacement Bill Weir (373,000), was the only CNN program to best FNCMegyn Kelly (353,000) in the demo. But CNN took a tumble at 10 PM when the network switched from missing-plane coverage to docu-series Chicagoland (172,000). FNC’s Hannity clobbered it (331,000). Earlier in the evening, CNN’s Erin Burnett (347,000) came within 9,000 demo viewers of FNC’s Greta Van Susteren (356,000), after which FNC’s Bill O’Reilly (486,000) widened the lead, over CNN’s Anderson Cooper (420,000). (more…)