This doesn’t matter, it’s a distraction.

A Grand Jury is there to decide if there’s even enough evidence to bother with a trial in the first place. The only time Grand Juries don’t indict is when even the prosecutor knows it’s pointless but they’ve got to look like they made an attempt.

What is shown to the Grand Jury has little to no bearing on an actual trial, it’s just a first step that ensures time isn’t being blatantly wasted by frivolous charges.