It still does not make sense. Just because the two are n the same chapter does not mean they are the same.
1. Daniel is talking about a past covenant God made with Isreal. Which has nothing to do with the church. He is talking about the mosaic covenant. Christ did not confirm that covenant, (see lev 26) this is WHY Daniel was praying, he admitted according to the covenant, His people were rightly judged. And according to Lev 26, Gods covenat with them was that if they did not follow him, but went contrary to him, the last thing he would do would be to destroy the city, the temple, and have a foreign army scatter them over the earth. This is the covenant Daniel was praying about.
Lev 26:
30 I will destroy your high places, cut down your incense altars, and cast your carcasses on the lifeless forms of your idols; and My soul shall abhor you. 31 I will lay your cities waste and bring your sanctuaries to desolation, and I will not smell the fragrance of your sweet aromas. 32 I will bring the land to desolation, and your enemies who dwell in it shall be astonished at it. 33 I will scatter you among the nations and draw out a sword after you; your land shall be desolate and your cities waste. 34 Then the land shall enjoy its sabbaths as long as it lies desolate and you are in your enemies’ land;then the land shall rest and enjoy its sabbaths. 35 As long as it lies desolate it shall rest— for the time it did not rest on your sabbaths when you dwelt in it.
The sabbath here is 70 years. Which is why Babylon did what they did. Jeremiah said it would be for 70 years according to the law of moses. And this is what Daniel meant when he mentioned the covenant. he even mentions aspect of the covenant in his prayer.
O Lord, great and awesome God, who keeps His covenant and mercy with those who love Him, and with those who keep His commandments, 5 we have sinned and committed iniquity, we have done wickedly and rebelled, even by departing from Your precepts and Your judgments. 6 Neither have we heeded Your servants the prophets, who spoke in Your name to our kings and our princes, to our fathers and all the people of the land. 7 O Lord, righteousness belongs to You, but to us shame of face, as it is this day—to the men of Judah, to the inhabitants of Jerusalem and all Israel, those near and those far off in all the countries to which You have driven them, because of the unfaithfulness which they have committed against You.
8 “O Lord, to us belongs shame of face, to our kings, our princes, and our fathers, because we have sinned against You. 9 To the Lord our God belong mercy and forgiveness, though we have rebelled against Him. 10 We have not obeyed the voice of the LORD our God, to walk in His laws, which He set before us by His servants the prophets. 11 Yes, all Israel has transgressed Your law, and has departed so as not to obey Your voice; therefore the curse and the oath written in the Law of Moses the servant of God have been poured out on us, because we have sinned against Him. 12 And He has confirmed His words, which He spoke against us and against our judges who judged us, by bringing upon us a great disaster; for under the whole heaven such has never been done as what has been done to Jerusalem.
13 “As it is written in the Law of Moses, all this disaster has come upon us; yet we have not made our prayer before the LORD our God, that we might turn from our iniquities and understand Your truth. 14 Therefore the LORD has kept the disaster in mind, and brought it upon us; for the LORD our God is righteous in all the works which He does, though we have not obeyed His voice. 15 And now, O Lord our God, who brought Your people out of the land of Egypt with a mighty hand, and made Yourself a name, as it is this day—we have sinned, we have done wickedly!
This same covenant, God says he will bless and show mercy to those who follow his precepts. This is the covenant Daniel spoke of.
2. The one who confirms the covenant is not christ. It is the prince who is to come. He also commits the abomination. It can not be the "messiah" Not to mention. the word "the " is not in the origional text. so I do not see where you are getting this. It is "A" covenant. we are not told what covenant it is. But we know it is not the mosaic covenant spoken of by daniel,
so they can't be the same covenant.