Very interesting discovery that you have made, that is that Daniel and Revelation are books that some Jews try to avoid in order to continue their ways, whilst avoiding contentions that bring forth internal contradictions.
In respect to the 70th week, I don't believe that the prophesy goes beyond the 70th week, that is, once 70 weeks are reached, the count doesn't continue past 70 weeks. It would be like how God created the world in 6 days and rested on the 7th, the 7th day arrived at the immediate end of the 6th day. Jesus arose from the grave on the 3rd day, where the 3rd day commenced at the ending of the 2nd day and so forth. If we take examples from the Bible itself we can know that once the 69th week has been completed, we are now in the 71st week. If we have it any other way, we would be imposing a western terminology of counting weeks, birthdays etc, upon a text which has Jewish cultural anthropological context.
It theory this makes sense - but it does not follow scripture. It is human reasoning. For example, WHY did Daniel Himself separate the 70th week into a verse all its own - as if to make it a separate week?
Is there something God cannot do? Would it be impossible for God to insert a parentheses into the Israeli time-line and turn to the Gentiles, thereby putting off the 70th week for later? I see no reason why God could not do this. Jesus sent me to find the exact midpoint - and I did - at the 7th trumpet. He also said I could find the entire 70th week clearly marked, and I did: the 7th seal, the 7th trumpet and the 7th vial. So you tell us? What is that time before the exact midpoint in which the first 6 trumpets will sound? And HOW is the ceasing of the sacrifices something soon in our future going to divide a week if half the week is missing? It would be impossible. No, the ENTIRE WEEK must be back to back and together at the same time for an event to split the week into two halves. In fact, this is exactly what Revelation shows us. However, if you wish to believe that the first half of the 70th week ended with Jesus' death, go ahead. If you wish to believe the ENTIRE 70th week was back then, go ahead. But you might as well tear the book of Revelation from your bible.
When people in the middle east say that a person is say 21 years old, the person is actually 20 years plus, that is he has entered into his 21st year and so forth. The western concept would say that the person remains 20 years old until the very day of his birthday, until 365 days have elapsed past his 20th year. So in retrospec the ancient Jews looked at the glass half full, whilst the western mindset looks at it half empty and that is why the glass remains empty until it is completely filled. In this regard we can draw the conclusion that the 70th week containing Daniel's prophesy have been half fulfilled as to say that we have already entered more than half way into the 70th week. It would be wrong to say that no prophesy is fulfilled, until we have reached the completion of the 70th week.
If we say 69 1/2 weeks is 69 weeks with zero 70th week fulfillment, then this is a wrong interpretation.
If we say 69 1/2 weeks is 70th week with over half of it fulfilled, then this is a more accurate interpretation.
Do you get the drift?