I think that Harpazo and I are trying to express the same things, and would certainly assent to the same definitions. I feel that Harpazo misspoke. Here is the definition of Christ’s presence in the Eucharist according to the Church:
*For neither are these things mutually repugnant,-that our Saviour Himself always sitteth at the right hand of the Father in heaven, according to the natural mode of existing, and that, nevertheless, He be, in many other places, sacramentally present to us in his own substance, by a manner of existing, which, though we can scarcely express it in words, yet can we, by the understanding illuminated by faith, conceive, and we ought most firmly to believe, to be possible unto God: for thus all our forefathers, as many as were in the true Church of Christ, who have treated of this most holy Sacrament, have most openly professed, that our Redeemer instituted this so admirable a sacrament at the last supper, when, after the blessing of the bread and wine, He testified, in express and clear words, that He gave them His own very Body, and His own Blood; words which,-recorded by the holy Evangelists, and afterwards repeated by Saint Paul, whereas they carry with them that proper and most manifest meaning in which they were understood by the Fathers,-it is indeed a crime the most unworthy that they should be wrested, by certain contentions and wicked men, to fictitious and imaginary tropes, whereby the verity of the flesh and blood of Christ is denied, contrary to the universal sense of the Church, which, as the pillar and ground of truth, has detested, as satanical, these inventions devised by impious men; she recognising, with a mind ever grateful and unforgetting, this most excellent benefit of Christ. *
CANON I.- If any one denieth, that, in the sacrament of the most holy Eucharist, are contained truly, really, and substantially, the body and blood together with the soul and divinity of our Lord Jesus Christ, and consequently the whole Christ; but saith that He is only therein as in a sign, or in figure, or virtue; let him be anathema.
(From the 13th session of the Council of Trent)
There is no mention of a physical presence, simple a substantive one. Christ is fully present under the accidents of bread and wine in a substantive, sacramental way.