Spot on

During that game, the Star-Telegram recorded the non-action time, things like the time between innings, visits to the mound and batters stepping out of the box. The breaks in the action amounted to one hour and 17 minutes of a game that lasted three hours and four minutes.
— http://www.star-telegram.com/2014/09/15/6122714/even-the-baseball-purist-must.html

I am purist, except for the designated hitter. I believe this is the biggest issue that faces baseball. Yes, more than PEDs, salaries, and financial disparity between the clubs. Unfortunately, most of the wasted time, in my opinion, is related to TV breaks.