The Hillah Stele
As I pointed out earlier by changing the number from 74 to 54 the writer or copyist could have easily caused readers to get the understanding that he was promoting. However, as I said, I will treat the Hillah Stele as if it were part of the inspired record of the Bible (although we definitely know that it is not nor is it inspired) to show that it still does not disprove 607.
First we must show what BM 21901 states:
that in the "sixteenth year" of Nabopolassar, in the month
Marheshwan, "the Umman-manda" (Medes) "who had come to help the king
of Akkad, put their armies together and marched to Harran against
Ashuruballit II who had ascended the throne in Assyria...the king of
Akkad reached Harran and he captured the city. He carried off the
vast booty of the city and the temple."
You surely must take note that it does not say that the temple was destroyed or ruined in the 16th year of Nabopolassar but merely that it was looted. Booty was taken from it and the city. The reader must assume that the writer of this chronicle is saying the temple was destroyed. The chronicle does not really say that.
We have a Bible example of this. Daniel 1: 2 In time Jehovah gave into his hand Je·hoi´a·kim the king of Judah and a part of the utensils of the house of the [true] God, so that he brought them to the land of Shi´nar to the house of his god; and the utensils he brought to the treasure-house of his god.
Now we know for a fact that the temple in Jerusalem was not destroyed at this time because we have further Biblical evidence that the temple was destroyed over 10 years later. The reader might make the assumption that the temple was destroyed at this time but he would be wrong. So likewise assuming that the BM chronicle above is talking about the temple being destroyed might just be a wrong assumption. It only says that booty was taken from the temple.
Now we can proceed to the Hillah Stele. The Hillah Stele tells us: "In the beginning of my everlasting reign they caused me to see a dream...they were standing together... Marduk spoke to me: 'Nabonidus, king of Babylon, carry bricks on your horse, build the Ehulhul and establish the dwelling of Sin, the great lord, in its midst."
We will assume that Nabonidus means in his very first year of rule although he merely says in the beginning of his rule. The Stele tells us: "Marduk the great Lord, and Sin, the Light of Heaven and Earth, stood one on each side of me, and the god Marduk spake unto me, saying: 'O Nabonidus, thou king of Babylon, with the horses of they chariot bring thou bricks, and build the shrine of Ehulhul, and make thou Sin, the great Lord, to dwell in his habitation.'"
And concerning this temple it says: "which had been lying in ruins for 54 years because of its devastation by the Medes (who) destroyed the sanctuaries, with the consent of the gods the time for reconciliation approached, 54 years, when Sin should return to his place."
If we count 54 years back using the chronology really established in the Bible it brings us back to about the 16th year of Neb's rule. Was this when the temple of Ehulhul in Harran was actually destroyed? Well I personally cannot say but if this was an inspired inscription that would be the only conclusion that could be reached. So the destruction of the temple in Harran apparently took place during Neb's rule about 20 years after Nabopolasser plundered or looted it if you believe the Hillah Stele.
And that is why it does not absolutely disprove 607 even if it were true.