Ok… but WHY are you trying to do this?
Like “I want two different views of the same scene like split screen.”
Or: “I want a map view on the top…”
…or some ‘logical’ explanation.
Because, for example, both of those have WAY easier ways to accomplish it.
…and all of the other cases I can think of are likely a problem of treating spatials like game objects. Which even if you don’t want to redesign around that we can still help with approaches if we know what the end result is actually supposed to do. Not in "this geometry and that geometry’ terms but in “My horses and cowboys” or “My planets and space ships” or whatever terms.
See this conversation as to why we like to know that stuff: