The same sculptor has apparently been very active on various historic and archeological sites in Italy (and maybe beyond).
Your comment, Mike, seems to suggest that one of the sculptures was made and placed by a copycat, but from Pete's explanation, I learned that his research told him that it was indeed the same Polish sculptor, and images of Icarus and an Angel respectively. It makes sense to display Icarus on a Roman site and an Angel near a Catholic landmark.
You both made me go back to some images that I made in 2018 in Pompeii, where several modern sculptures were also placed.
One was a sculpture of a Centaur, and at first glance it could have been a Roman original, but at second glance there were details that revealed its modern character. Another was a classic standing bronze male, but with a little window in his back showing a small second face (maybe an interpretation of Janus?) and that detail, again, made clear that it was not original but a modern intervention on the archeological site.
At the time I did not note nor investigate the author of these modern sculptures, but running my images of them through Google Lens, it becomes clear that once again our Polish friend had been allowed/commissioned to do his thing there.
So here are MY echoes:


I have several more images of each sculpture in this gallery : roelh.zenfolio.com/p456943747
Some of those others show "better angles" of the statues (more context and/or less overlap with distant columns and pillars etc), but these two show off the "picture in a frame" additions best.
Makes me wonder if also your Angel and Icarus had the same feature.