ᐅ Sequence for Plastering a Solid Wall – Connecting a Drywall Partition

Hello,

I would like to hear your opinions:
I have an unfinished solid masonry wall to which I attached a stud wall (in the area where the walls connect, I pre-plastered using a CW100 profile with moss rubber to make it smooth and airtight).

What should I do first:
a) Attach the double-layer drywall panels tightly against the solid wall and then plaster the solid wall up to the drywall (advantage: can be finished cleanly)?
b) Plaster the solid wall first and then install the drywall panels flush with the plastered wall?
c) Install the first layer of drywall panels with a slight gap from the wall, then plaster the solid wall, and finally install the second drywall layer flush with the wall?

In both cases, I would of course include a suitable separation layer (e.g., separation tape) to prevent cracks. All options are fine for me in terms of workflow.
In the installation guidelines from major drywall manufacturers, I only find recommendations for walls that are already fully plastered.

Thanks and best regards