Retro-nothing:
It has been contiguous:
St. Augustine (354-430) writes: That which is seen on the table of the Lord is bread and wine; but this bread and this wine, when the word is added, becomes the Body and Blood of the Logos.
St. Cyril writes: As a life-giving Sacrament we possess the sacred Flesh of Christ and His Precious Blood under the appearance of bread and wine. What seems to be wine is not wine, but Christs Blood.
St. Basil (331-379) prays in these words of his liturgy, Make this bread into the Precious Body of our Lord and God and Redeemer Jesus Christ, and this chalice into the Blood of Our Lord and God and Savior Jesus Christ, which was shed for the life of the world.
Circular logic again