If the disciples believed as Rome claims, they would have been doing exactly that....drinking His actual blood.
That is what Rome teaches....the wine somehow becomes blood.
You might want to check the Greek on the terminology on this issue.
And again...context is your friend on this, and all issues.
1For I do not want you to be unaware, brethren, that our fathers were all under the cloud and all passed through the sea; 2and all were baptized into Moses in the cloud and in the sea; 3and all ate the same spiritual food; 4and all drank the same spiritual drink, for they were drinking from a spiritual rock which followed them; and the rock was Christ. 5Nevertheless, with most of them God was not well-pleased; for they were laid low in the wilderness. 1 Corinthians 10:1-5 NASB
Paul tells us why we have the Lord's Supper.....
25In the same way He took the cup also after supper, saying, This cup is the new covenant in My blood; do this, as often as you drink it, in remembrance of Me. 26For as often as you eat this bread and drink the cup, you proclaim the Lords death until He comes. 1 Corinthians 11:25-26 NASB
25In the same way He took the cup also after supper, saying, This cup is the new covenant in My blood; do this, as often as you drink it, in remembrance of Me. 26For as often as you eat this bread and drink the cup, you proclaim the Lords death until He comes. 1 Corinthians 11:25-26 NASB
Precisely.
Surely you know this "Memorial Acclamation" is made in every Catholic Liturgy?
You heard it --- if your hearing is intact --- at those two Catholic funeral Masses you attended.