You are mistaken.
Neither GIRM 154 nor RS 72 apply to the question I asked. Neither precludes a priest, deacon or acolyte from entering the nave (and thus leaving the sanctuary) to distribute Holy Communion. It would be absurd to suggest otherwise based on the actual text:
GIRM 154. *"…The priest may give the sign of peace to the ministers but always remains within the sanctuary, so as not to disturb the celebration. In the dioceses of the United States of America, for a good reason, on special occasions (for example, in the case of a funeral, a wedding, or when civic leaders are present) the priest may offer the sign of peace to a few of the faithful near the sanctuary…" *
**RS 72: **
It is appropriate “that each one give the sign of peace only to those who are nearest and in a sober manner”. “The Priest may give the sign of peace to the ministers but always remains within the sanctuary, so as not to disturb the celebration. He does likewise if for a just reason he wishes to extend the sign of peace to some few of the faithful”. “As regards the sign to be exchanged, the manner is to be established by the Conference of Bishops in accordance with the dispositions and customs of the people”, and their acts are subject to the recognitio of the Apostolic See.
It’s absurd that anyone would even cite GIRM 154 or RS 72 in this discussion.