Print close objects as separate objects

Hello!

I like to model my supports directly in CAD.
Since i have a H2C now with 2 Nozzles i would like to make use of the trick to combine PETG as main and PLA as Support interface.

However, if i place 2 Objects close to each other they will be handled as one Object with one closed infill as you can see on the pictures.

Is there a work around to slice this multiple objects truely as single object each with it own top and bot surface?


Anything new to this topic?
Kinda struggling with it right now.