Hey @QuentinHamm ,
Welcome to the community! Feel free to Introduce yourself 
to the community if you want to! 
Certainly, it is possible. To do so, you must merge your two data sources into one using Power BI. I found this article online👇:
Afterwards, connect the Stream URL, Commit Object ID, and Object ID inputs for the 3D Viewer Visual. Once completed, you will be able to view your two models in the viewer.
Feel free to let us know if you face any issues.