score:2
Catholics do not receive "small pieces of sacramental bread", but the Body of Christ (i.e., consecrated Hosts), under the appearances of bread.
Cornelius à Lapide, S.J., on 1 Corinthians 11:21:
at the time of S. Paul, in imitation of Christ, who, after the common meal* on the Passover lamb, instituted the Eucharist, the Christians instituted before the Eucharist a meal common to all, rich and poor alike, in token of their mutual Christian charity.
*1 Cor. 11:25: "In like manner also the chalice, after he had supped…"
Cornelius à Lapide on that verse: "the heathen offer their sacrifices after a banquet, as giving thanks to God for their feast, and offered Him libations and sang His praises crowned with garlands. […] The ancient ritual records of the Hebrews show that they did the same in the sacrifice of the Paschal lamb. […] Christ supped first and instituted the Eucharist last of all. Now, however, through reverence for so great a sacrament, the Eucharist, by Apostolic tradition, is always received fasting."
St. Paul is condemning those who do not believe in the Real Presence but think the Holy Sacrifice of the Mass is no different than a common meal of ordinary food.