Direct to reported speech conversion for a relatively complicated structure
Direct speech:
"I was surprised to see the broad claim made that theirs was the first publication to announce that the Wright flying-machine was a success. ... Gleanings announced it to the world a long while before the Scientific American had taken any notice of this wonderful invention."
Reported speech (an attempt):
Amos Root said he was surprised to see the broad claim made that the Sci. Am. was the first publication to announce that the Wright flying-machine was a success. ... He also considered that Gleanings had announced it to the world a long while before the Scientific American had taken any notice of this wonderful invention.
That combination "I announced before it had taken any notice" puzzles me a bit. "announced" happened before "had taken" while "had taken" is a more distant past as "announced". It sounds like an inversion.
What is the right transformation to indirect speech of what A. Root said?