Complex sentence: The show was broadcast on Channel 5 between 15 February 2004 to 5 March 2004 and was advertised by Channel 5 as being "The biggest reality show of all time" however in terms of ratings, it failed to deliver.
Split into simpler sentences: The show was broadcast on Channel 5 between 15 February 2004 to 5 March 2004. It was advertised by Channel 5 as being "The biggest reality show of all time" however in terms of ratings, it failed to deliver.