Does the central enthalpy ventilation system exchange inlet and outlet flows?

Hello experts,

I have a question. Maybe someone has experience with this.
In our planned new building, a central enthalpy ventilation system will be used. Usually, 2 x exhaust air is installed in the bathroom and 2 x supply air in the bedroom. However, since I am concerned that the necessary door undercuts could cause noise disturbances, especially in the bedroom, I have the idea to install both supply and exhaust air in each of these two rooms. Of course, with sufficient distance between them. This way, the undercut can be kept normal.
Has anyone had experience with something like this?
Can the airflows simply be switched again if there are problems?

Thank you very much for your answers

What exactly do you mean by door clearances?

Bathrooms, kitchen, utility room exhaust air
All other living areas supply air.
We also have exhaust air in the upstairs hallway (to be able to capture the warm air there as well).

I also think that was a good idea in hindsight. Of course, it doesn't make the whole thing cheaper and needs to be well planned (have a professional do it). Normally, with something like this, you put one in the floor (e.g. supply air) and one in the ceiling (e.g. exhaust air).

Undoing or repurposing ducts is not that easy (I don't want to say impossible, but it is definitely complicated).

For soundproofing, you can also make overflow openings in the frame (either ready-made or buy and install them (the frame then needs to be trimmed). Because the duct then turns twice around a corner, the sound is at least somewhat broken up.

Ok, so shortening doors…

I had thought about it too until someone once said to me, “Do you really always close all the doors 100%?”

I have never heard any noise under the door when they are closed, nor have I ever had a door that could not be opened due to over-/underpressure in the room.

If necessary, door leaves can also be shortened later – after moving in.
I have to say that I planned and installed my controlled residential ventilation system myself and came across this issue. In the end, I had classic doors installed.

Both are possible. Ultimately, it is a matter of the existing situation. If it concerns the usual round tubes (75/63), you would probably have to plan 2x exhaust air and 2x supply air in the rooms.