The average NFL football telecast lasts about three hours, but during last year's Super Bowl game, 47 minutes and 50 seconds of that telecast was devoted to commercials and network promotions, according to a study by Kantar Media cited today (Wednesday) by Advertising Age . That compares with 40 minutes and 15 seconds of ad/promo time during the 2001 Super Bowl. The number of commercials increased to 104 last year versus 82 in 2001. By far, the biggest advertiser during The Game has become the network carrying it. Last year, CBS aired 8 minutes and 15 seconds of network promos during its telecast, worth $49.1 million if it had sold the time to advertisers. Fox has the game this year.