Complex sentence: On 20 March 1986, Bathersby was ordained Bishop of Cairns by Archbishop Francis Rush, whom he would succeed as Archdiocese of Brisbane on 3 December 1991, and installed as the sixth Bishop (and fifth Archbishop) of Brisbane on 30 January 1992.
Split into simpler sentences: On 20 March 1986, Bathersby was ordained Bishop of Cairns by Archbishop Francis Rush, whom he succeeded as Archbishop of Brisbane on 3 December 1991. He was installed as the sixth Bishop (and fifth Archbishop) of Brisbane on 30 January 1992.