
The 78-year-old former Vatican treasurer is trying to overturn a six-year sentence for sexually assaulting two 13-year-old choirboys in the 1990s.
Pell, who once helped elect popes, is the highest-ranking Catholic Church official ever convicted of child sex crimes. He maintains his innocence.
Legal experts have struggled to predict the progression of the high-profile case, as it threw up one surprise after another.
Judges could yet deny Pell’s appeal, order a retrial or quash his conviction altogether.
The case relied largely on the testimony of Pell’s surviving victim. The second choirboy – who is not known to have ever spoken of the abuse – died of a drug overdose in 2014. Neither man can be identified for legal reasons.