Complex sentence: He was also the first Australian bishop to call a diocesan synod since the Second Vatican Council, that was held in Canberra during 1989, with a subsequent second synod in 2004.
Split into simpler sentences: He was also the first Australian bishop to call a diocesan synod since the Second Vatican Council. It was held in Canberra during 1989 with a subsequent synod in 2004.