Q: After communion ministers receive communion, may a deacon pick up the vessels from the altar and hand them to the ministers? Or can only a priest do that?
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A: A deacon may help.
The Norms for the Distribution and Reception of Holy Communion under Both Kinds in the Dioceses of the United States of America says this at #40: “After all eucharistic ministers have received Communion, the bishop or Priest celebrant reverently hands vessels containing the Body or the Blood of the Lord to the Deacons or extraordinary ministers who will assist with the distribution of Holy Communion. The Deacon may assist the Priest in handing the vessels containing the Body and Blood of the Lord to the extraordinary ministers of Holy Communion.”