Flush-mounted shower base body from various manufacturers

Hello everyone,

we were considering installing our shower as a concealed installation.
For the overhead shower, we would like this one:
Hansgrohe Pulsify S overhead shower 260 2jet with wall connection. The installation manual states that it must be connected to a Hansgrohe carrier body at the top in the wall.

And for the hand shower, this one:
Hansgrohe Pulsify Select S shower set 3jet

For the control, you now need something for 3 consumers. Unfortunately, with Hansgrohe I only found the expensive Rainselect solutions, or you can install a 3-way valve for selecting the shower + a separate thermostat. I don’t find that very appealing.

With Grohe, however, I found something more appealing:
GROHE Grohtherm SmartControl thermostat pre-assembled set with 3 shut-off valves
Of course, this must be installed with a Grohe carrier body.

Now my question is, can the Hansgrohe overhead shower carrier body be connected with the Grohe thermostat carrier body, and thus operate the Hansgrohe overhead + hand shower with the Grohe thermostat, or must everything come from the same manufacturer?

It would be great if someone knew something about this, I don’t quite understand it all. I thought they are actually only connected with a "normal" pipe, so it shouldn’t matter?!

Thanks & regards

No, you cannot.

We just spoke with two experts because our Hans Grohe concealed fitting is calcified. You can only combine it with makeshift solutions.

Okay, too bad, thank you for your help

Why should this be the case? You need the appropriate base body for both. You have already recognized that yourself. In between, only the piping is done. So what speaks against it?

SumsumBiene probably wanted to install a different manufacturer in an existing base body / flush-mounted body

Why should this be the case? You need the appropriate base body for both. You already realized that yourself. In between, only the piping is done. So what speaks against it?

Oh, so it is just as I imagined, that would be great :)