Complex sentence: Shane was interviewed by Kavanaugh and Dutch and argued that it was too convenient for Kavanaugh to have discovered the amount of evidence on Vic in a few days considering that his previous investigation of six months had failed to materialize anything.
Split into simpler sentences: Shane was interviewed by Kavanaugh and Dutch and argued that it was too convenient for Kavanaugh to have discovered the amount of evidence on Vic in a few days. Commenting that his previous investigation of six months had failed to materialize anything.