I won't... I won't... I won't...
The business tablets that you refer to are of no great concern to celebrated WT scholars because these documents are still subject to interpretation.
Too bad CWTS (celebrated WT scholars) did not apply the same logic to the Bible texts.
The Jonsson hypothesis makes the bold claim that these records cover every single year of the Neo- Babylonian period yet Jonsson complains that these remain subject to sribal errors.
As has been pointed out, dates are an essential feature in those kind of documents and most likely to be checked seriously. Remember, too, Bible texts are equally "subject to s[c]ribal errors," especially in datation which is secondary to their literary genres.
Additionally, there remains the problem as to Why these documents are silent on Nebuchadnezzer's missing seven years off the throne.
You have already been told that any "missing seven years" would not modify datation by rulership. Confidentially, I'll tell you one thing more: Daniel 4 is a 2nd-century Jewish tale. It is not mentioned in Neo-Babylonian annals for the same reason that the Joseph and Exodus stories are not mentioned in Egyptian history, Jonah's preaching in Assyrian history, Esther and Mordechai in Persian history, etc. But of course you can disregard this heretical comment and get back to the "inerrant Bible paramaters".
and the twenty year gap problem when such chronology is compared to biblical chronology
Not Biblical chronology, WT synthesis which disregards the different contexts for the expression "70 years".
In short: CWTS will disregard any evidence which doesn't suit the claims of CWTS.
Too bad.