Disclaiming FWIW I'm not an expert whatsoever.
I assume that anything which occurs within the timeframe of the marriage would be protected by spousal privilege regardless the current status of their divorce proceedings. I believe this would also include any discussions, revelations or "discoveries" made by either party within the timeframe of the marriage (such as knowledge of "personal interests" etc). Again JMO etc.
Considering the fact that other properties have changed hands recently, I do have to wonder what that could mean for the future of this case. Whether the property outside NY has anything to do with RH crimes and if AE selling it off is any indication as to her level of knowledge, whether this could have an impact or affect the limitations of spousal privilege etc. JMO.