So what it speaks to is something that Dr. Sungenis failed to address in quoting Hildegard of Bingen ("sainted" by Ratzinger, so I'll withhold the title for now, not out of disrespect for her, but for the Conciliars) ....
Dr. Sungenis quoted everything that had the word sphere in it, but Hildegard, while indeed describing the earth as egg-shaped (rather than spherical) ... and this is the part that Dr. Sungenis somehow filters out ... stated that there's nothing on the bottom half of the sphere except for Sheol and the Deep. So, yes, the earth / world is spherical for her, but it is NOT the NASA ball model where there are people upside down on the bottom of a ball. You see ... the notion of gravity had not been understood yet back in the day, so it's absurd to pretend that the Church Fathers believed in NASA ball earth, for ... how exactly would people stick upside down on a ball if there isn't the concept of gravity?
In fact, St. Augustine detailed a debate, and St. Ambrose opined on the matter also ... about how it was possible for the earth to be at the center of the universe (suspened as they considered it to be) in water, when, given its solidity, it should sink to the bottom of said water universe? St. Ambrose held that it was either do to some rotation of the waters that kept it suspended or else that it was suspended miraculously. St. Augustine leaned that way, but then stated it was acceptable to say that the earth was hemi-spherical, having settle at the bottom, since bottom center is still center. Note that both took as an unassailable premise that the earth was at the very center of the entire universe.
But if the Church Fathers at time speak of a sphere, it's not the NASA ball with people stuck on the bottom, but more this (and this is also what Hilldegard described) ...

While I respect cassini, and continue to pray for him, he at one time quoted Hildegard against flat earth but somehow didn't notice the fact that in the very passage he had cited, she said that on the bottom half of the sphere there was only Sheol and the Deep. So NOT proof of NASA ball earth. I responded to cassini's post by bolding that section.