I don't know about such things. I read the Bible and don't see where the Disciples had to be "educated" or attend the sacrament of Confession before Communion with Jesus. I tend to keep things simple and Bible oriented. The Catholics, it seems to me, makes things so difficult. I was talking with one person once on what it took to be a (Catholic)deacon and it was a real ordeal.
Question for you?
Did the Bible come from oral tradition or Holy Tradition?
If you think it is so difficult, why bother about it? No one here is trying to convert you.