Pregame tailgate snacks: 20 could be Broncos’ magic number

  DENVER — There is something every NFL team but the Broncos has done at least once since Week 14 of last season: score 20 points. There is something every NFL team but the Bears has done at least once in that same time span: allow 20 points. This is the Broncos’ challenge Sunday afternoon, and it is stern: to…