Complex sentence: The race was also broadcast with limited commercial interruption; only three green flag laps took place during commercials during the entire broadcast, because of cable and satellite television providers having several minutes every hour to air local ads, bypassing TNT entirely.
Split into simpler sentences: The race was also broadcast with limited commercial interruption; only three green flag laps took place during commercials during the entire broadcast. The broadcast could not be fully commercial free as cable and satellite providers themselves are given several minutes every hour to air local ads, bypassing TNT entirely.