Not guilty pleas means the State has to prove beyond a reasonable doubt that the legaly innocent individual did what s/he was charged with.
The defence would have been prepared by him with the legal team before the case was listed. And all the evidence which would be used in the trial would have been available to him to discuss all the options available. And it was the second time it was in the courts so 4 weeks was not going to do much after a 2+ year delay which was plenty of prep time.
I suspect a long term "hunger strike" could have medical implications about his ability to participate in his defence / the trial as a whole and would only result in a further delay if the 4 weeks were granted
He or his ex-legal team could have argued against some of the evidence being shown to the jury etc but the State organising a cross examination tested the witness on how sure/positive they were about the statememts they made at the time of the investigation.
And i amend my statement 😁
Even with a defence there was never going to be it is highly unlikely there is a suprise disclosure by a witness that they were lying or had gotten something wrong. So that and other evidence would be detailed and presented in order to the jury.
so him choosing to be a no-show would not be a legal reason to stop the trial nor i think create a reason to appeal