Besides the demand for the Visual ARQ:
@jonathon @connor: the interaction in the Excel is for me also only one way. A selection in the 3D view selects the row in the spreadsheet. The other way around selecting a cell and having only the selected element visible is not working in the German version. I believe this is also the reason why it only worked one-way for @oda_federico. The English version of Excel (Web) is working like a charm. It is the same situation as with the PowerBI (Desktop + Web) → PowerBI Published Report - Help - Speckle Community
English:
German: