I have to say this though it won't be popular.
I think the reason that the jurors had the questions they did was because they feel (at this point) that "something isn't right" with the witnesses testimony.
I started out watching this being completely objective. I didn't know about the case, nor did I have any preconceived notions.
I felt Flores was cagey. Although his video'd interrogation was mostly superb, his testimony in court felt very engineered, like it was designed to only reveal pro-prosecution info, but that he was withholding stuff. I can't think of an example right now, but I had a distinct impression.
Then Melendez testified and I felt a similar feeling. On direct, Juan got Melendez to say that the last activity on the computer was at 3:34PM. BUT THEN in cross, the defense confirmed, after an objection and sidebar which was apparent to the jury, that the actual last activity on the computer was 4:54PM. That's over an hour difference. Maybe it's an innocent mistake, but there was an objection by Juan and a sidebar to discuss this timing difference.
The ME testimony in some ways does not seem to match his report, and there is the whole deal about whether he spoke with Flores about the gunshot being first, which Flores put into his report. While the ME may never have said this, the controversy may well be causing the jury to wonder about what he might be withholding or hiding or even misrepresenting.
I think the jury may be picking up on some feelings of having something pertinent purposely withheld from them. Whether it makes a difference or not, who knows, but no one likes feeling manipulated by misinformation or partial truths, IMO.
There are some other things I noticed, but I can't think of them right now. But something doesn't feel right.
That said, the more I learn, the more I personally feel that this was premeditated. But I am eagerly awaiting JA's "story". If nothing else, it should be fascinating.
That's why the defense cross examines. If they had proof the testimony was slanted or evidence withheld, it would come out. jmo I do understand what you are saying tho, I had the same sort of feeling.