How do I lay different floor coverings at the same height?

"Exchange an 8mm recess for a 6mm higher usable surface."
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KlaRa

KlaRa, the 8mm height difference refers to tiles <> vinyl flooring.
If the TE were to say goodbye to vinyl and switch to parquet, in my opinion that would also be exactly THE solution for 15mm tiles ;)

@ "netuser": Then it should indeed work like that!

What would be the solution in the following situation?

Only tiles are to be installed in the entrance area as well as the bathrooms on the ground floor and upper floor. According to the tiler, this will result in a thickness of 14-15mm for the tiles and adhesive.

In all other areas, we would like to lay vinyl flooring with impact sound insulation; we are considering a variant from Ter Hürne in the Comfort version with a thickness of 9.1mm.
We would have a difference of 5-6mm (!) at the transitions.

Is there a solution for how we can combine the selected variants relatively cost-effectively? Note: we do not want to use parquet.

I am looking forward to your answers.

Hi, where is this supposed to lead to? I think a 5-6 mm difference is really a luxury problem. We are in the construction sector here, not in mechanical engineering! How does it look in other areas? Is all this effort really worth it? Regards Olli