Sure they do. But, we are not at discovery, if I understand it correctly. Broden is prepping for an Examining Trial and he’s trying to gather what evidence he can to challenge probable cause.
don-o guesses.
Maybe not as a technical point as far as the word "discovery" is used (e.g., maybe the rules of procedure don't call it "discovery" until after an indictment), but the right to evidence and the discovery process are ongoing. Parties can argue they don;t have to produce, and parties are obliged to produce new material as it comes into their possession. The subpoena to the DA and the PD probably (and should) include a demand for all witness statements that mention this defendant.
The state typically plays games with its obligation, forcing defendant to move for production and get a court order, but that's just the way the game is played. The state is interested in convictions, not justice.
thx...