So I would do the interior plaster first and then the drywall. The interior plaster makes the building envelope airtight; if you cover the raw brick, it is no longer airtight.
so I see several criteria the drywall partitions should have been covered at least in the lower area before the screed, edge strips applied to the drywall partitions, then the screed against them edge strips left in place until the tiles or floor covering are laid, otherwise a connection between floor and wall occurs which is supposed to be prevented by the strip floor to walls and ceilings to walls have to be decoupled at least it could have waited until after the screed installation to shorten the edge strip to about 2cm above the screed and then plaster or cover the walls with whatever it might be cracking could now occur because the decoupling to wall ceiling/floor is no longer fully given
For my construction project, the steps were as follows: plastering the exterior walls, construction of the complete stud walls, one-sided sheathing, installation of all cables and installations in the TB walls, final double-sided sheathing, laying the insulation and edge strips, laying the underfloor heating, installation of the screed.