Using Virtual Fields in Views in QGIS

I’m trying to summarize some information in a map layout in QGIS controlled by an atlas. I have parks, and connected to that I have objects within these park (points, lines and polygons).

I want a list of all objects in the park (the specific one in the atlas window) on my layout and also some summary-statistics (e.g. the entire area of all polygon objects in my park).

So far, I’ve created a virtual layer combining all objects per park and use that virtual layer as a relational child to the park to display those objects with my atlas function. The same I did with a ‘summary-virtual-table’.

Now the problem: if the area of one of the polygon-objects change, I’d usually work with a virtual field, so changes in the geometry automatically reflect in the ‘area’ column. But virtual fields can’t be used in virtual layers, as far as I understand. So, with static fields I’d need to recalculate the area every time something changes and then also recreate the virtual layer.

Is there another way to deal with this, I might not be aware of?