Pope Francis (left) talks with Pope Emeritus Benedict XVI in the former Convent Mater Ecclesiae at the Vatican in 2016, three years after Benedict stunned the Catholic Church by resigning to become pope emeritus.

Pope Francis (left) talks with Pope Emeritus Benedict XVI in the former Convent Mater Ecclesiae at the Vatican in 2016, three years after Benedict stunned the Catholic Church by resigning to become pope emeritus.