Should parquet be glued on underfloor heating with or without impact sound insulation?

Hello, we are currently renovating a house and are in the process of having the parquet flooring installed. Previously, parquet flooring was installed floating over the underfloor heating with cork and a vapor barrier foil. Now it is to be glued directly onto the screed, as this is supposed to be better for underfloor heating. But what about the impact sound insulation in that case? Thank you very much for your answers.

The adhesive represents the impact sound insulation - including the impact sound insulation built into the screed insulation.

Glued parquet cannot be compared at all with floating floor coverings.

Is the impact sound insulation not under the screed?

Yes, normally - but for floating floor coverings there must also be impact sound insulation underneath.

So you don't lay any extra impact sound insulation under the glued parquet? I had read that a few times on the internet...

Only cork should be avoided with underfloor heating, as cork is also heat insulating