Blackout isn't the same as pass out. If you are in blackout stage, you know what you are doing while you are doing it. You just have no memory of the the next day and sometimes, you never remember it.
I still have no memory of leaving the bar and getting into my car to drive home. I have a vague memory of a loud BANG and then voices yelling at me asking if I was okay. Then I have a glimpse of memory of a police officer asking me questions, then another vague memory of standing before a police captain or something. He was on a higher level and behind a desk. They were going through my purse, I think.
That was about 7 years ago. Those things never come back because blackout destroys the memory area of the brain. There is nothing there to remember. It's pretty scary if you study about it.