Complex sentence: The Broncos also would lose in an NFL AFC Divisional Playoff Playoff match against the Pittsburgh Steelers at Three Rivers Stadium on December 30,1978, and lost the next year's wild card match against the Houston Oilers on December 23,1979 at the Astrodome.
Split into simpler sentences: The Broncos also would lose in an NFL AFC Divisional Playoff match against the Pittsburgh Steelers at Three Rivers Stadium on December 30,1978. They would also lose the next year in an NFL Wild Card Playoff match against the Houston Oilers on December 23,1979 at the Astrodome.