Living room setup possibly through breakthrough expansion

Hello everyone, we have purchased a house and are currently thinking about how we could redesign the living room to gain a bit more space and combine the sleeping area and utility room into one, since this is supposed to become an office of 10-12m² later on. I will of course attach the floor plan at the very end.

The plan is to create a breakthrough from the living room towards the sleeping area. But the sleeping area should not be fully used; instead, it will be connected to the utility room through another breakthrough between these two rooms. A drywall partition will be installed between the sleeping area and the living room at the height of the utility room wall so that it visually fits. The couch is actually supposed to go into the approximately 2-meter freed-up space (it is 3 meters wide). Now to my problem with this: a plinth of about 25cm must remain on both sides for the steel beam, and these two plinths would then be exactly at the height of the couch and the TV. Do you perhaps have any great ideas here? I would appreciate any suggestions.

Could you please post a sketch that at least suggests your current plan? It's often difficult (for me) to understand from words alone.

I suppose that is the wish.

Exactly, that would be the current idea. However, I have always understood that for a breakthrough, a certain bearing surface must exist (I read something about 25cm, of course a specialist company would take care of that for me). I have circled these wall remnants. I would like to place the couch like this and not open into the room, and the TV on the newly erected drywall, since a fireplace will be installed between the living / cooking & dining area, which should of course also be visible from the couch. I have drawn everything in. The door on the angled wall will be removed or closed off, but this should not be relevant for the breakthrough question.

Ok and thanks . Either you find a solution that is as flat as possible and live with the wall distance, or maybe it would also be an option to place a roughly half-height, lightweight wall (possibly also made of wood or another beautiful material) or a module shelving system similar to a sideboard in the middle of the room, roughly directly under the numbers "28.49", and then hang the TV on this back wall. This way you have a passage on the left and right, still some separation, and you look towards the dining room, which you probably want to extend more in the direction of the window, right? I would then probably do that flush with the window.

Oh, I also quite like the idea of the TV wall as a room divider, I hadn’t even considered it before. Thanks for the suggestion. The whole thing flush with the current dining room window and possibly a small one in the newly created living room area, so that the corner doesn’t appear too dark because of the TV wall room divider.