OK, all I needed was that you overlap the 3.5 days it takes for the 2 witnesses to be resurrected. There is no real reason to overlap this period however. The second 42 month period could start immediately after the first 42 month period and the time it takes for the 2 witnesses to resurrect goes into the second 42 month period.
In this way there is no extra 3.5 day period to be calculated in the 7 year covenant of the beast.
Kevin there is no extra 3.5 day period added to the 7 years. The 3.5 day period fits within the 7 years.
There is is also no such thing as the covenant of the beast. There is a common misconception that the covenant in Daniel 9:27 is some sort of peace treaty. But not so.
There is the confirming of the covenant for 7 years which begins the 7 years. That confirming of the covenant for 7 years is something the person does when the Jews think he is the messiah - before he later becomes the beast.
Playing the part of the messiah, anointed the King of Israel - he makes a big speech from the temple mount, confirming the Mt Sinai covenant that God gave the children of Israel the promised land as theirs forever.
He is not doing it as something he just fancies to do. Moses made as requirement back in Deuteronomy 31:9-13, that all future leaders of Israel, make the speech to the nation of Israel, on a 7 year cycle - which is why it says "for one week (7 years)" in Daniel 9:27. Moses made the requirement so that future generations would not ever forget of what took place coming out Egypt and why they are living in the land of Israel.
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Kevin there is no 42 months expression used for the first half. The first half is the exact 1260 day expression.
The two places that the 42 months are expressed, Revelation 11:3 and Revelation 13:5 are both generally speaking the second half.
The way it is structured, the like time expressions go together.
The two 1260 day expression verses are things that take place in the first half.
The two 42 month expression verses are things that take place in the second half.
The three time, times, half times expression verses are things that take place in the second half.