So the defence is saying that OP screamed like a woman for about 15 minutes. If you follow the timeline of the defence and say this was an accident, wouldn't you think that OP should have called SA's equivalent of 911 at 3:01AM right after he realized that it was RS that was shot?
Essentially, yes, to your first question. They want the court to believe that ALL noises made that evening were Oscar and Oscar alone. Although the defense doesn't like the 15 minute timeline so they have alluded to tightening that up. Because yes of course it looks ridiculous that Oscar was screaming like a woman for 15 minutes. We'll have to see how they do that (maybe somebody else will testify that they heard the first bangs later than 3am, just speculation).
Either way... Oscar didn't call anybody until 3:19, and that was Mr. Stander, the estate manager. He spoke to him for 24 seconds and Stander was one of the first on the scene, along with his lawyer daughter. They had not called an ambulance, they went straight to Oscar's house.
The second call that Oscar made was to Netcare, a private ambulance company. That call was 66 seconds. We don't know what was said between them, nobody has testified to it. Oscar claims that they told him to take Reeva to the hospital himself. I'm hoping that Netcare take the stand at some point because I'd really like to know what they discussed.
The ambulance situation is very confusing. The Standers never called an ambulance. Dr. Stipp (who arrived on the scene around 3:24am-ish) asked if anybody had called and at that time Stander told Baba, the security guard, to go call. The ambulance showed up after Stipp determined Reeva was dead. There seemed to be very lack-luster attempts at getting quick medical help that night (in my opinion).
Oh and also, before any help had arrived yet, Baba called Oscar at 3:22 and Oscar told him "everything is fine". Didn't say that he just shot his girlfriend accidently. Didn't say that he just spoke with Netcare and I need to get my girlfriend to the hospital, can you help me with that. Didn't say anything at all about what had just happened.
None of it rings true to what you think would occur when somebody desperately wants help for their loved one.