Complex sentence: Mark together with Sam took part in a Hole in the Wall which aired on 11 October 2008 and were contestants on a celebrity version of TV show Total Wipeout which aired on 26 December 2009.
Split into simpler sentences: Mark together with Sam took part in a Hole in the Wall which aired on 11 October 2008. Mark and Sam were contestants on a celebrity version of TV show Total Wipeout which aired on 26 December 2009.