For those who may not know, Carl Olof Jonsson was an elder in Sweden. He got challenged at the door to prove the 607 date.
His research proved definitively that there was no historical support for that date at all.
He sent his research in to the GB.
They told him to say nothing but to wait on Jehovah's organization.
After plenty of time went by, Carl realized that they were just deep sixing his report, hoping he'd forget about it and go away.
He published his notes as a book, The Gentile Times Reconsidered.
JWs, go get the book, look at the research and show any historical evidence that he's wrong.
Why is this important?
It means the key 1914 date of the WTS is off by 20 years (even assuming that 2520 years from the date the Babylonians destroyed the temple means anything at all).
If 1914 is wrong, then the WTS' "invisible presence of Christ" claim is wrong, and its claim to be the "faithful and discreet slave" is fantasy.