As I previously stated, from the time that Jesus quoted Daniel 9:27, no seven year covenant has been made and no abomination was set up in the temple. These events must have been fulfilled in order for you to make your claim, which they have not. And the "He" referred to three times in Daniel 9:27 is referring to that ruler of the people, the future antichrist, who at the end of the seven years will have the decreed destruction poured out upon him, which is when the Lord returns to the earth to end the age where he and the false prophet are cast into the lake of fire alive.
1948 is not the end of the time of the Gentiles. Though the destruction of the temple by Titus and his legions was a terrible event, it will pale in comparison to what is coming. Luke is mixing both the destruction of the temple and future events, which were both future to him.
When the antichrist is revealed by making his seven year covenant with Israel, in the middle of that seven years he will break his covenant causing the sacrifices that Israel will have been performing and will set up that abomination in the holy place, which I personally believe is synonymous with the image that the false prophet has the inhabitants of the world make as described in Revelation 13. At that time and as Paul revealed, the man of lawlessness will oppose and exalt himself above every so-called god or object of worship. So he will seat himself in the temple of God, proclaiming himself to be God. That did not happen in 70 AD.
As long as you have unfulfilled scriptures, you cannot make the claim that those events have taken place. And since God's word regarding those events must take place, then they must still be fulfilled in the future.