Was the John O'Keefe autopsy testimony pivotal in the Karen Read trial?

It was a difficult day in the second Karen Read murder trial, as the most graphic evidence so far was presented while the medical examiner who performed John O'Keefe's autopsy testified about her findings. Get a recap and analysis of her testimony on the undetermined death finding, more of what it was like in court while images of O'Keefe's body were shown as well as an update on the buffer zone that's kept protesters far away from the courthouse.