Complex sentence: Just three months prior, the Gator football team had defeated the Buckeyes in the BCS Championship Game, and becoming the first team in NCAA Basketball history to win both the Football and Basketball National Championship in the same sports calendar "season" (year).
Split into simpler sentences: Just three months prior, the Gator football team had defeated the Buckeyes in the BCS Championship Game. Florida became the first team in NCAA history to win both the football and basketball national championships in the same sports calendar "season" (year).