ᐅ Passive house with mechanical ventilation system: fresh air intake covered by a piece of furniture

Hello!
We have been living in a passive house with controlled ventilation for almost 10 years.
In the living-dining area (about 40m² (430 sq ft)), in addition to an exhaust vent (kitchen ceiling) there are two supply air outlets on the floor (rectangular with metal grilles).

Now we want to place a piece of furniture in a corner of the living room that would completely cover one of the grilles.

Can anyone tell me how critical this is? What if there is only one supply air outlet instead of two?
The living-dining area (the ground floor) is connected to the upper floor without doors, where there are, of course, additional supply and exhaust vents.

Thank you very much for your advice.
Matthias

There may be some noise generation. If necessary, the system will need to be recalibrated.