Sequential Order of Operations
If George is yelling "I can't breathe", while in a stuffy-hot or air conditioned squad car for 6 minutes, yet continues saying "I can't breathe", repetitively like a broken record over and over, with a knee in his neck; then maybe the source of saying such words, originates with his perception while being under the influence of substances that were shown to be in his blood upon laboratory examination results; rather than caused by the restraint applied by the officer?