Oh, I know what I looked like. I was covered in my own blood in the nurses office waiting for my father to pick me up and take me to the urgent care facility. I just don't know exactly when the bleeding stopped. Maybe it was 10 minutes. Maybe it was 30 minutes. It was fifteen years ago and I was twelve. The bleeding did stop on its own, and soon enough that I didn't die or concern the nurse so severely that she would call an ambulance.
I wasn't addressing anything about GZ. I was addressing your claim that a head wound won't stop bleeding after 30 minutes without a pressure bandage or stitches. I've had experience with this. The bleeding will stop.