Oh, you've done it? Tell me about your specific medical expertise that is greater than... basically every medical organization that has spoken on the subject. Is your expertise also that you read a wikipedia page?
Pretty much everything real on the subject is about industrial accidents, which are not really analagous, or from the few examples of euthanasia with nitrogen pods -- and the information provided by Dr. Philip Nitschke who researched the actual N2 aspyxiation euthanasia devices and who publicly said the Alabama method was not like that at all and was likely to cause significant pain and distress.
~22 minutes is now being reported, with the guy struggling, gasping, resisting, fighting, trying not to die. Fighting for his life on the gurney. This method provides no guarantees, no timelines, and DEFINITELY is not the nonsense people are describing about "gentle sleep" or whatever the fuck.
I suspect you and the people in this thread have exactly the same level of expertise as the Al lawmakers and agencies that allowed this to happen: bullshit none.