Blocked nose and snoring

I've been treating patients who snore for 25 years or more. Many thousands of cases. I've learned that everything revolves around the retrolungual space - the back of the tongue, so far back you can't see it without a mirror or endoscope. Blockage in this area causes turbulent air flow, which triggers snoring. One of the main causes of blockage here is nose obstruction, as this causes mouth breathing, which shifts the base of the tongue backwards into the retrolingual space.