It's true that Bob never went off topic. He brought up the Eucharist and the altar which are directly related to the priesthood.
What Michael should have done at that point is sieze the opportunity offered by his opponent and do what he did 40 minutes later, towards the end of the debate: bring up Corinthians 11.
That quote would have won the debate 40 minutes earlier that it did.
The other argument that ruined Bob's position was Michael's question where the apologists against sacramental priesthood were in the first 1500 years of the Church. That also went unanswered. A superchat repeated the question towards the end and it was again deflected.
What Michael should have done at that point is sieze the opportunity offered by his opponent and do what he did 40 minutes later, towards the end of the debate: bring up Corinthians 11.
That quote would have won the debate 40 minutes earlier that it did.
The other argument that ruined Bob's position was Michael's question where the apologists against sacramental priesthood were in the first 1500 years of the Church. That also went unanswered. A superchat repeated the question towards the end and it was again deflected.