It was stated that Terri's attorneys feel that LE is using the civil case to gather information to take a criminal case forward.
It does stand to reason if the Deputy District Attorney is sitting in a divorce case, there is some deeper meaning than he was just hanging out and had a few free hours.
I can't imagine it is typical for the DDA to do this, which is why I asked if it could appear prejudicial, and whether Terri's attorneys could argue that. If the proceeding was closed to the public and the DDA was just hanging around, he's being afforded a privilege the rest of the public is not. If the proceeding was open, free seat, yay!
That's why I asked. I don't know!

Hope that helps