In this lively debate, Erick Ybarra, a Catholic apologist, engages with Ubi Petrus, who presents an Orthodox Christian perspective. They explore the Vatican I concept of papal primacy, dissecting its historical manifestations in the 5th and 6th centuries. Key discussions include the roles of pivotal figures like Pope Leo the Great and historical councils, revealing the intricate power dynamics between the Pope and local bishops. Their contrasting views on ecclesiastical authority and doctrinal purity provide a thought-provoking examination of Christianity's divided traditions.