By Ross Dellenger The sport’s postseason is expanding to 12 teams, but plenty of questions remain—such as, when will it take effect? Greg Sankey swung open the doors and burst into the circle of reporters gathered in the lobby of Big Ten headquarters in Rosemont, Ill. The SEC commissioner took a deep breath inward as if he was seconds away from a major announcement, maybe a breakthrough in negotiations for college football’s expanded Playoff. “My quote is this!” he bellowed, and then, as he darted toward the door, Sankey smiled and pointed toward CFP executive director Bill Hancock, “Whatever …