Measurement behemoth Nielsen is preparing to spin off its Global Connect business into a separately run company – while the Global Media business will stay put. After more than a year of takeover rumors and the completion of a strategic review, the underlying and perhaps unfortunate message is that activist investor Elliott Management is singlehandedly orchestrating more disruption in the US entertainment landscape right now than any technology company. The New York-based hedge fund says the separation of Nielsen’s contrasting divisions will “unlock the substantial valuation upside of both businesses, which today trade at a meaningfully depressed level after a year of uncertainty.” Faultline’s immediate thought was what the move will mean for our friends over at Gracenote, which was…