Logic is a rare commodity these days. When someone says I can't breathe because your knee is compressing his neck, obstructing his windpipe or his lungs, maybe just maybe that's a Signal that you're slowly obstructing his air flow.
Simply out the shoe on the other foot, would you like a cop to cuff you, put your face on the ground and then put his knee on your neck for 7 sum minutes? Let's see if you have trouble breathing, and announce it to the cop, Hey I'm having trouble breathing can you f**k off with the knee maybe? If it isn't too much inconvenience for your Dominant Power Pleasure fix?
If you can talk you can breathe? Sure, until you can't because unless you're in a deliberate choke hold, you won't lose consciousness in 2 seconds, but you will over a prolonged period.
Its just like is a Snake gets along of you, it doesn't Make you pass out instantly, but once it wraps itself and coils around your arms, your neck and your torso, it will slowly start to squeeze and tighten until your face turns red, and you start to panic. It might take the snake 10 minutes to Choke the life out of you, building pressure slowly, you can talk and even scream for help all you want, I suppose you can still breathe, but soon after that you will lose consciousness.
I've had to choke out a few people in my time. Enough to stop them from fighting. Its not hard.
Especially if you get them on the ground. The harder the struggle the harder you choke and even when they say I can't breathe you're choking me, I'm like ok, do you still want to fight? Stop struggling... But You're choking me!
Don't worry I won't kill you, I'll let go once you've lost the will to fight.
before they pass out and go numb you let go. You can tell when the strength is leaving them.
Not once did I use my knee.