The point made in the opening post, that Daniel 4 is not a type, is obvious when you read the chapter, and in verse 33 it says " at that moment the word itself was fulfilled upon Nebuchadnezzar,...." (italics mine).
If you can get a JW to read that with an open heart, then any discussion about 607 and therefore 1914 is redundant. They will see for themselves, as I did when I first read that verse without JW Specs on, that the whole silly edifice of the 1914 teachings simply has nothing to support it from the Bible.
From that it is a short step to the realisation that :
No 2520years = no 1919 "choosing" = the GB are self-apponted charlatans.