I'm happy to criticise the State - I think they had far more evidence to play with than was used in court (e.g. they didn't present the phone records correctly IMO).
What I'm saying about forensics is that the Stipps heard two sets of sounds, there were two 'obvious' causes (4 gunshots through toilet door and 3 cricket bat strikes against the toilet door to break it open), so they would conclude perhaps that there is nothing else to look for?
It was Roux who introduced the question about whether the State's case was two sets of gunshots. Nel stood up and after being a bit evasive said that it was the State's case that the shots that killed Reeva were the later sounds. The State has never really committed on what the other set of sounds were AFAIK.
It's true that the state didn't commit to what the first set of sounds were.
a) They couldn't commit if they felt they had no basis for conjecture, and
b) It wasn't essential because it wasn't it wasn't part of the act of murder as far as the state was concerned. It could have been useful evidence of an argument prior to the shooting but only if the state could back up the claim.
Can you imagine the mincemeat Roux would have made of the state if it claimed that both sets of bangs were shots but they didn't have solid evidence?
I agree that Nel sounded evasive about the first set of bangs, which was a mistake. All he needed to say was the state wasn't there, so couldn't be sure, but the earlier "bangs" were not the fatal gunshots. That he HAD to account for this was also a distraction.
However, as the state could prove that as the second sounds which occurred at 03:15 were the gunshots, then the first set of sounds must have been the cricket bat strikes.
This would have been a very crafty tactic in my view. Defence couldn't claim it COULDN'T be true. Vermuelen testified that only a crack through bullet hole D must have been later than the shots. And defence already agreed that cricket bat strikes sounded like gunshots.
I think it would have put Roux on the back foot, especially as Oscar had just settled out of court on a case that involved bashing a door down in a rage (allegedly), in fact his heavier front door (from recollection). I would have loved to hear how Oscar would have dealt with this.
As to the defence claim that Oscar broke down the door after the shooting - assuming it was locked - the door would have been damaged already. That could have involved merely prizing it open near bullet hole D, which is at a join.