 On its original UK broadcast, Season 22 featured a change in format to 45-minute episodes.However, to fit with established scheduling here in Australia, the ABC cut each 45-minute episode in half, resulting in two roughly 23½ minute episodes and meaning a particularly poor 'non-cliffhanger' was created at around the halfway mark of each of the original episodes.After part four of "Revelation of the Daleks" in late January 1986, fans were surprised by the broadcast of two black and white Troughton serials ("The Mind Robber" and "The Krotons"), screened by the ABC for the first time since 1971.