The last half of verse 27 is not part of the actual 70th week; it is the aftermath. IOW the prophet gives a broad picture of what was going to happen from the emperor Artaxerxes announcement down to Messiah and onward to the destruction of the temple 40 years later.
The midst of the 70th week was Passover, AD 30, and the actual end of the week was AD34. The event that marks off the endpoint was the gospel going to the Gentiles as promised. (Acts 10)
The idea is to stick to what is written in the text, and that there is zero written in the text in verses 25-27 that could possibly be meaning any of this that you said----"and the actual end of the week was AD34. The event that marks off the endpoint was the gospel going to the Gentiles as promised. (Acts 10)". But if I am wrong, then point out in verses 25-27 where anything written in them covers that period of time specifically? To show what I'm meaning, let's look at those texts.
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 street shall be built again, and the wall, even in troublous times.
Can the 3.5 year period of time you are referring to, that ends in 34 AD, be found within this block of text?
And after threescore and two weeks shall Messiah be cut off, but not for himself
Can the 3.5 year period of time you are referring to, that ends in 34 AD, be found within this block of text?
and the people of the prince that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the end of the war desolations are determined.
Can the 3.5 year period of time you are referring to, that ends in 34 AD, be found within this block of text?
and in the midst of the week he shall cause the sacrifice and the oblation to cease
Can the 3.5 year period of time you are referring to, that ends in 34 AD, be found within this block of text?
and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.
Can the 3.5 year period of time you are referring to, that ends in 34 AD, be found within this block of text?
Since that period of time obviously can't be found in those blocks of text, I am then assuming you are assuming it is found in this block of text instead---And he shall confirm the covenant with many for one week. That covers an entire week, though. So, where in the blocks of text I just submitted do you see any of that involving an entire week, the fact you deny that all of verse 27 involves the entire week? Per your interpretation you can only produce half of that week, rather than all of it. Per your interpretation Daniel 9:25-27 is silent on what occurs in the last half of the 70th week, so you then need to add to the text things not present in the text.