There is no gap! The final week is the whole New Testament period, starting from the Cross, after the 69th week, to the Second Coming. There is no gap between 69th week and 70th week, as you thought.
The 7 and 62 weeks prophesied are specifically only
to the coming of Messiah the Prince. Then it continues,
after the 62 weeks Messiah is cut off and
He confirms the covenant for 1 week. It doesn't say when Messiah comes he is immediately cut off, because that would be ridiculous and confusing. There has to be time between Messiah's coming, and His cutting off, including his earthly ministry. The prophesy is specifically to the
coming of Messiah, and the word of God shows this official fulfillment was in 29 AD. Then the prophesy continues, after the 69 weeks Messiah is cut off, but not for Himself. So the question is, "when, after," and the answer is, obviously at the cross.
Again, these are not literal weeks or time periods that we add up like years, like you thought. This last week has lasted 2000 years, the 62 previous only 434, and the 7 before that only 38 years. There are no missing years,
there is no gap between 29AD and 33AD because there was never a prophesy of literal years. The 70th week is
after the coming of Messiah and
after the 69 weeks, as was prophesied. The cutting off of Messiah was
not prophesied to be 69 and 1 week. They aren't weeks at all, it is literally 70 sevens or "complete" time periods. I think you are trying to count the 69 weeks as literal years. That's a no, no. They aren't literally 70 weeks of years. There is one key directing us to the
Jubilee period, and its not literal years. There is another key to the coming of Messiah, and its not 62 years. And another for the
whole New Covenant period, and its not a week (or 7). Yet there is complete symmetry, harmony, and cohesiveness to it all. Three distinct periods, one "COMPLETE" time signified by the number 70.
Actually, I think that is where a lot of date setters get into trouble, attempting to add literal years, when God has never prophesied it that way. Whether 70 weeks of Daniel, 1260 days in the wilderness, 1000 years of Revelation, 2300 days before the sanctuary will be cleansed, or the 3 1/2 days the two witnesses lay in the streets. God doesn't work that way!!
These are all spiritual lengths of time. There are no gaps in these times, because they were never meant as literal years. They are "KEYS" directing us to certain spiritual truths occurring at certain times. The anointing, the Church age, the New Covenant Millennial period, sacrifice ceasing, etc.