Very few sleep specialist have any experience with CSA. Believe me. I've tried to find a sleep specialist for CSA. So, if you stop breathing and snore, it is OSA. Treatments for CSA are limited. Some try a BiPAP machine. Otherwise, there are just phrenic nerve stimulators to force the diaphragm to contract.

I have a friend with both but they only treat the OSA. His CPAP treatment helps but does not solve all of his problems. He needs an anti-convulsive med for sleep because his CSA causes seizures before his breathing restarts.

I've spent a lot of time researching this because CSA was a primary cause of my father's death.