NEW YORK, July 17 : The halftime interval in Sunday's World Cup final between Spain and Argentina is set to last more than 15 minutes because of the installation required for the tournament's first halftime entertainment show, broadcasting sources said on Friday.The installation of the stage for the 11-minute

Half-time at the World Cup final will boast a host of stars and could last up to half an hour thanks to FIFA’s controversial Super Bowl-style interval.

Broadcasters expect a 30-minute interval, double the official maximum.