Tim Brosnan, Major League Baseball’s executive vice president of business, said he hadn’t heard anyone from a rightsholder’s sports division balk at the suggestion of promoting another network — but their bosses higher up in the corporate hierarchy were often leery of boosting the competition in any way. Turner Broadcasting System President David Levy, whose company owns TBS and TNT, said technological advances also have made execs more cooperative. The NFL’s TV partners have started airing graphics plugging games on other networks, too. The cooperation between ESPN and Fox in the Major League Soccer contracts that start next season is even more extensive. CBS and Turner essentially act as one company when they air the NCAA Tournament, with announcers encouraging viewers to flip among the four networks showing games. Both the CBS and NFL Network logos appear on graphics. Because NFL Network is a league-owned entity, it’s a bit different from CBS teaming with Turner.