Person B stubbornly trying to dress themselves after sustaining hindering injuries. Person A walks in to find B painfully struggling to pull on their shirt. Whether Your OTP is together or not, Person A decides to help.
So it's obvious that trying to knock people out is mostly unrealistic and often times lethal. But what about when someone is tired from their injuries? Is there a difference between passing out and being knocked out? Where's the line? Can trauma from head hits not knock someone out, but result in passing out? Can being knocked out for more than a few seconds be bad news, but passing out for hours just be regenerative, and if so what would cause that distinction to physically manifest?