[editor-surveyor]

"The Roman Catholic Church teaches the context of John chapter six and the above headlined verse 53 are literal."

Not particularly surprising that the post resurrection pharisees of the Roman church would stand in defiance of what the Lord said in that same chapter:

" It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life"

[Ravens70]

“Not particularly surprising that the post resurrection pharisees of the Roman church would stand in defiance of what the Lord said in that same chapter’

Perhaps the same could be said for post reformation pharisees of the Protestant church standing in defiance of what the Lord said and the Church practiced for 1500 years...

[Philo-Junius]

The point of 6:63 is that the apostles must believe His teachings about His flesh and blood in order for His flesh and blood to be effective.

Mere mechanical ritualism is not salvific, and the Church has never taught otherwise.