Earlier quoted context omitted.
I second this. Absolutely pay out of pocket if insurance drags their feet. I spent $5k on a mouthpiece for my treatment and would do it again. It is far from an ideal solution, but in the 3 months it takes insurance to get their shit together - your friend could have the energy to work a side job to pay off whatever it costs and just be generally happier overall
OK good advice, did not know that was an option.
in my case, i needed to see an orthodontist every 2 weeks to have the mouth piece adjusted. I am not sure how CPAP works to say if it is safe to "plug and play out of the box" so-to-speak