Complex sentence: He maintained this position for 3 seasons, until January 5,2011, after 13 years with the Denver Broncos organization, he was elevated to the position of President of the Denver Broncos.
Split into simpler sentences: He maintained this position for 3 seasons, until January 5,2011. After 13 years with the Denver Broncos organization, he was elevated to the position of President of the Denver Broncos.