Daniel Aguillon also got knocked out in the 12th round of a bout and never got up. was in a coma for 5 days then died.
no the knock out is the effect of your body saving it's self from further injury, to bad some others don't hit as hard to trigger the safety switch so the accumulation of punches are the ones that kill.
The knock out is an injury, you can die from a single punch http://www.bbc.co.uk/news/uk-england-manchester-11219532
well what about the bout before it? that one punch was one punch too many. It's still equals to the accumulations.