Hi, I was asking this guy about a person being cremated alive. He told me that he actually would not feel anything, due to an overload of stress signal his brain is going to receive, and how his brain will simply shut down. Is this true?

Also, how soon will this person being fed into a cremation oven lose consciousness? How many seconds?

Thanks.

Well first, he could not, unless someone owned a cremation center and wanted to kill someone.

But there would be terror, knowing what has going to happen, some extreme pain, as the heat started, but the gas, lack of O2 and extreme heat would kill him quickly

For Pete's sake, why? Anyway, did you ever hear that shock is kind to the body? If someone is stabbed for example, they would feel the first "blow" so to speak but after that they may not feel anything. Their body would be or go into shock. Same as when you are dealt with bad news. You think or feel that you do not feel anything. That is most likely (mental) shock. I am sorry but I keep asking why? Maybe I do not understand your question. If I or anyone can find out how many seconds this may take in the case you are referring to, will let you know.
Be well and Hugs!