Nor is it required of the priest to do so in general.
There are specific reasons for the priest to offer the main chalice to certain individuals on a case by case basis… wired jaws, recent stomach surgery, wheat/glutin allergies…
The only significant restrictions of note:
No one but an ordained cleric (subdeacon*, deacon, priest, or bishop) is permitted to take up the chalice from the altar. The EEM’s must be handed their communion cup by the cleric.
In general, EEM’s must also be handed the ciborium, save for certain specific circumstances (mostly outside the mass). Examples include a communion service (without consecration) lead by a lay minister with the bishop’s permission. (Happens in Alaska a good bit. Circuit priests and all)
Ordained ministers must be exhausted before EEMs may be used.
Both the body and the blood are the full Eucharistic experience alone, or together.
A priest is supposed to not deny the Eucharist to any who are in good faith and good standing.
- Subdeacons are no longer being ordained in the Roman rite. There are subdeacons in some other churches in Union with Rome.
One point, in the late 1970’s, a parishioner at Holy Family Cathedral in Anchorage had their jaw wired shut. The priest handed the ciborium to the altar server to hold, retrieved the chalice, gave communion to this person, returned the chalice, and then took the ciborium again, and continued with communion.
In the church in Corvallis, OR, I saw one abuse in the early 1990’s: the parishoners were allowed by the Auxiliary Bishop to take up the cup from the Altar to receive. It WAS reverent, just not
Permissible by the GIRM.