…giving Communion from the tabernacle is like inviting guests to a banquet, then preparing and eating the meal by oneself, while serving one’s guests from the refrigerator with the leftovers from a previous meal. Everybody gets fed, nobody goes hungry, but the symbolism of the common partaking of the common meal is completely destroyed. Eucharistic Communion is not just the sacrament of the communion of the individual with God in the Body and Blood of his Incarnate Son, which Communion from the consecrated species reserved in the tabernacle provides. Eucharistic Communion is the ecclesial communion of the faithful with one another in Christ by sharing together his sacrificial and heavenly banquet. Communion from the tabernacle can hardly claim to signify this except, of course, in the case of Communion brought to those unable to attend the banquet. (pp 17-18; emphasis in the original)
Robert F. Taft, “”Communion” from the Tabernacle – A Liturgico-Theological Oxymoron”, Worship Vol 88, No 1 (Jan 2014): 2-22.