So you yourself have not seen a pic which you think corresponds to arterial spurt pattern either ? I went through the pics pretty carefully and I couldn’t find anything close, but I’m wide open to seeing what is claimed to be definitely arterial.
His actual words were: "the deceased probably didn't breathe more than a few times after sustaining this wound" and "The wound to the head was incapacitating and probably almost instantly fatal." As you know there is no video or audio of his evidence but you can find those words reported
here. I was summarizing what I understand to be the meaning.
To my mind it makes it so unlikely that I want clear proof that the heart was still beating when he was carrying Reeva down those stairs. Moreover, even if there was some residual heartbeat there had been massive blood loss and there were several major arteries severed, which makes for dribbles rather than spurts.
I don't think Nest's reference to arterial "spurt" was seen as an issue. Neither the defence case nor the prosecution case rests on when exactly Reeva died as long as it can't be proved to be before 3.15. Nest may even have been influenced by OP’s story that Reeva was still alive as long as that hadn’t been challenged. I was watching the debate with Viper as a fence-sitter seeing strong arguments for both sides, until I realised that one of the strong arguments I was relying on was my impression that Standers, Stipp and co. had seen Reeva still alive. When I realised no one but OP had seen any sign of life I then checked the pics against what is set out on arterial spurt in my modest forensics library…
RBSM