With the toxicology report in hand and her testimony, why wasn't that used to establish cause of the death ?
It was. They asked the medical examiner - If you had seen Floyd's body, without the tape, what you you think. Answer: drug overdose or heart attack.
You would think the defense lawyers would use this during the trial.
Uhhh he did. BTW, it was one lawyer against about 10 ... but whatever. I happen to think that the lawyer for Chauvin did a good job, given all that he was up against. And the judge did alright too - except he should have moved the trial to a location that wasn't so threatening.
If the toxicology report showed an enormous amount of fentanyl in his system which would caused a cardiac arrest as its known to, why didn't the involved doctors state so ?
They did. But the prosecution had their key witness. I doctor who didn't get paid, as if that means he is any more credible. Seems he had an agenda. He took the stand and declared that there was no other cause, not even a little bit, that caused this death. Not the drugs, not the heart condition, nothing.
And the jury, being faced with possible doxing and death threats, suddenly agreed with the prosecution.