HomeschoolDad:
If the priest intends to consecrate those hosts, then they are consecrated. It’s not as though there’s a “spiritual force field” emanating from the priest, in that any hosts within X distance get consecrated, but if those hosts are “out of range”, then they don’t get consecrated. Long story short, intent.
Not to press the issue, but if this is the case, could a priest then validly (and beyond-way-over-the-top illicitly) consecrate a loaf of bread that he knows exists overseas?
There is an apocryphal story of a renegade priest who went rogue and, for reasons known only to him, stood in front of a bakery, said “This is My Body”, and consecrated all of the bread in the bakery. I hope to heaven that this
was just apocryphal, and that it never happened. I have heard the validity of such a scenario debated back and forth.
If I had to guess, I would say that any hosts, in close proximity to the priest, that the priest is aware of their existence and intends to consecrate, get consecrated. To say “a layperson in the very back pew of the nave is holding a vessel that contains a host, and I intend for that host to be consecrated in this Mass when I recite the words of consecration” is really getting on the outer edges of what could be considered a valid consecration.
So to answer your question, probably not, but I can’t say “not” with absolute certainty. Any experts here who could give a better answer?
As a side note, to attempt the consecration of the Sacred Species outside of Mass, by a priest merely saying “This is My Body” and/or “This is the chalice of My Blood”, is defined in canon law as
nefas est, which in Latin is a very strong way of saying “you may never do this”. As far as validity, the way I have always understood it,
we simply don’t know.