I appreciate I am late to this particular discussion, but the ToD is of particular interest. I have followed the case on and off since the main trial started, but have not been immersed in all the details.
I had not heard about the digestive evidence before, and I missed the nuance about lag time versus emptying time. If the autopsy is correct, the probability of an earlier ToD is much higher than that suggested by the prosecution timeline. I would say the prosecution timeline is not credible.
Given the prolonged nature of the attack, it was not simply a spur of the moment thing. It seems unlikely that Knox and Sollecito left Sollecito's apartment at 21:10, and between say 21:15 to 21:45 became involved in struggle which led to Meredith's death. It never seemed very plausible to me that Knox receives a phone call telling her not to go to work, which turns into rage against Meredith and a violent outcome, or a sudden decision to play a prank on Meredith which went tragically wrong. It seems more likely she would return to Sollecito's and get high, which may also account for their odd behaviour and poor recall.
I had wondered if Knox and Sollecito were reluctant to be more specific in their accounts in order to conceal other illegal activity, such as meeting up with a dealer or doing harder drugs. It could also be that they were somehow complicit in the murder, perhaps by assisting Rudy or a third party.
The only evidence that actually ties Knox and Sollecito to the murder is the DNA evidence, which tbh is not that convincing. Without that evidence, the prosecution case as a whole is a lot less convincing.
Knox and Sollecito's actions and statements would appear to be incriminating, based on a general view of what "normal" people would do, but they are also consistent with a pair of naive dopeheads getting wrapped in something way over their heads.