I don’t have the answer to either question but I would certainly be interested in any responses you receive. I am the wife of a 65 yo man who has constipation for years, loss of smell and acting out dreams to the point that I feel sure he has RBD. Out healthcare in our rural area has not allowed for the sleep study yet but should be hopefully within a month or so. I’m not sure how to follow you for any responses but I would be very interested to know. Please accept my sympathies for your concern. Have you checked in with the Michael J Fox Parkinson’s organization? I watched a recent video some months ago that may have answered your question. I suffer with a poor memory. If I can find it, I’ll add it if I can get back here.