There are 15 minute knock outs, 10 minute knock outs. Times when you can choose to come out x minutes earlier(advantage), or when it chooses how long you are knocked out(random).
I was on PC and I thought I selected my seals of deflection(I assumed they were in the same spot as usual), but at the last second, the picture of the item loaded and revealed a horn, but by then it was too late.