If the snorer has sleep apnea, deviated septum or other sinus issues those are not addressed. Actually doing the sleep study early eliminates the higher probable cause. I have done it all so speak with experience.
CPAP probably saved my life and used it until recent sleep study said I didn’t need it anymore. I had lost weight and gotten in better shape and to my surprise I am sleeping just fine.
Just DVR’d that and haven’t gotten around to watch it. An underrated movie IMHO.