It's pretty murky and confusing though. Here the Attorney is in the same vicinity for the suspect and comes to the suspect's side during the questioning. While this may be a separate action, under the reasonable person logic, one could assume that she was representing him at that time for this "new" investigation. I'm reasonably confident that when we have "representation" in the legal world, it's a larger umbrella, rather than smaller. IOW, each new crime we are charged with isn't one that we must name an our counsel and ask for specific counsel (clear me where wrong here, please). Her proximity to the suspect and interference may count as acceptance as counsel. Did he ask for counsel? What is the standard there? A look? Pleading eyes? Specific words? Considering the ongoing representation, I'm leaning towards the officer taking a bit of a slap from the court, even if he was technically in the right.
How would the investigator know either way? IOW, how would the investigator know to arrest her? How did he assertion she was not representing the subject in general matters too? I don't have the answers to that...it's a real question.
Correct, however it would be smart for the investigator to ascertain who the attorney was and the level of representation. there's a consistent problem we're seeing in the US and this fits right into the theme...
In this case, I'm not sure very much is obvious aside from the majority of America not knowing the basics of law.
And that brings me to my overall point: If we want to avoid these types of polarizing issues in the future, every high school in this country should have a year of civics and half a year of US law and interaction with law enforcement, etc...IOW, what are ones real rights and obligations under the law. The fact that know one knows is an ongoing problem that prosecutors and law enforcement are able to use (to great effect too), which leads to this animus we see pervading society. Ignorance is anger, these days...and if we can cure that ignorance...