So let’s say his knee was on his neck, for however long you want. He then shifted it to the shoulder blade. At that time, he was still breathing and talking. Then after he’s dead they find zero evidence of any trauma or problems caused to his neck or airway, as well as great oxygen levels in his blood, meaning no asphyxiating occurred. So if he did have his knee on his neck….it doesn’t matter, at all. It did not cause him to die, the cops knee had zero to do with this guy ODing on drugs he ingested well before that cop got there.