@Escoffier If the Lord's Supper was only a communal meal then why does Paul, in the same letter to the Corinthians, say:

“Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord.” (1 Corinthians 11:27)

How can someone be guilty concerning the body and blood of Christ if it's just a communal meal? You could benefit from taking another look at how other Christian traditions treat the Lord's Supper and especially look closely at how they treat the relevant verses of Holy Scripture. If all we share is a communal meal then there is no benefit to it beyond a full stomach. If all we're supposed to do is eat together why does Paul caution us to discern the body of Christ? When Jesus says "this is my body" maybe He actually means it.