Complex sentence: In 2014, Bennett became the first ACC coach to win 16 conference games in a single season since Mike Krzyzewski at Duke in 1999, and in 2015 Bennett became the first coach "ever" to win 16 ACC games in consecutive seasons.
Split into simpler sentences: In 2014, Bennett became the first ACC coach to win 16 conference games in a single season since Mike Krzyzewski at Duke in 1999. In 2015, Bennett became the first coach ever to win 16 conference games in consecutive seasons.