Not with Daniel 9:27, but 70 AD identifies what people the prince that shall come will be of.
Jesus left this world before 70 AD and Jesus was not of the Romans. Jesus's people were the Jews.
The Jews destroyed their own city. Just read Josephus. That is how we know something even happened in 70AD.
The Romans destroyed the walls, but all they did is finish up the destruction that went on for the entire siege within the walls.
The Jews could have surrendered immediately upon Titus' arrival. It is not that Roman occupation of Jerusalem was a new and strange concept.
You are basing your view of Scripture on an historical account about the Romans. But the message from Gabriel was about the Jews and their cutting off their own Messiah.
The civil war among the Jews was just that, civil and not necessarily against the Romans. People forget that the only reason the Romans started to come in larger military operations, was the Jews fighting each other and the Roman Pax in the region was becoming unstable.
But you are still avoiding the point that at the 7th Trumpet the Lord via the Prince to Come, Jesus is announced King over all nations, and that is when the Covenant is confirmed with the many as now they are all under the authority of Jesus Christ. At that point it will be determined if they all physically die in the winepress of God's wrath or will time be extended to allow for those who are later defined as being beheaded. No one was beheaded prior to the sounding of the 7th Trumpet.
The word confirm was used. The Hebrew "gabar" means strong or mighty. This is not some OT enforced Law. This is not some peace agreement between nations.
This is the strength of Christ's authority over sin and death. The wicked will be destroyed in this show of strength of the Atonement that has been the salvation of mankind, but God's grace and the punishment has been declared over. That is what time up is meaning concerning the days of the 7th Trumpet.
The English meaning of the word confirm is showing us the moment of truth has come. The time of redemption has run out. The NT or Atonement Covenant of the Cross is about to be declared finished. None of Adam's dead corruptible flesh will be allowed to continue past this time for current creation.
Many claim the time up at the 7th Trumpet is not the 70 weeks. They want that time up in the first century and totally miss the point of time up in Revelation 10. Then get bent out of shape when told that would mean the 7th Trumpet sounded in the first century.
It would also mess up their time up at the Second Coming point. Then many others want the whole entire 70th week to be future. The 70th week is Jesus Christ the King. Because Gabriel says until Messiah the Prince. It does not say until only the Messiah and someone else will be declared Prince who is not Jesus.
"Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah the Prince shall be seven weeks, and threescore and two weeks."
The next verse already gives an OT reference that time would be extended, with the 70th week being cut in half. The 70th week would not be finished until the Prince to come, actually came. So Messiah was already prophecied as being cut off, physically no more on the earth, and the week would be postponed indefinitely until a return of the Messiah as the Prince.
Verse 27 cannot be the interim of the 70th week. Verse 27 cannot take place until after the Prince returns. It is not the Messiah who confirms the Covenant, it is the Prince to come who confirms the Covenant. That is all evident within the text itself. Placing the prophesy into history is a secondary interpretation from other Scripture.
BTW: until the Prince comes and declares the 70th week over, those promises in verse 24 cannot be implemented, even if the work was already accomplished by the Messiah. We cannot have the 70th week finished until the King is announced at the 7th Trumpet. We cannot have the entire 70th week in the future, because the Messiah part was declared finished by Jesus on the Cross.
Paul declared blindness in part was placed on Israel until their Prince returned. So that proves Paul understood the gap of the 70th week, even though he did not write a commentary on the book of Daniel.
"For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in. And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob: For this is my covenant unto them, when I shall take away their sins."
Their sins taken away is a direct point found in Daniel 9:24. The term mystery is referred directly by John in Revelation 10 about the 7th Trumpet.
"But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets."
The mystery Paul does not want us to be ignorant of can only be declared finished at the 7th Trumpet. That is when Jesus is declared King over evey nation. That is when Daniel 9:27 happens and Jesus confirms the Atonement Covenant.
The foundation of the Covenant was the Cross and Jesus as Messiah. The Strength of the Covenant is Jesus as King at the 7th Trumpet.
Only after the 7th Trumpet will there be an AoD or Satan's 8th kingdom for what it is worth. This Aod is not the second half of something. The AoD is not a period in between two seperate 3.5 year periods, which Daniel 9:27 infers. The only reality is that the AoD splits a week of days in half and that is the days of the sounding of the 7th Trumpet. We see the last 3.5 days after those 42 months, as the time the 2 witnesses lay dead, and the same 3.5 days the 7 vials are poured out. All events within the sounding of the 7th Trumpet.