Denon HEOS 150 speaker: does included Alexa be available for OH e.g. Text-to-speech?

I would like to buy a Denon HEOS 150 speaker.
Alexa seems to be included into that product.
I am wondering if I can include that Alexa (running on a Denon speaker) into OH? I would like to send text-to-speech commands from OH to the speaker.

With my amazon Echo devices this is working well - will that be possible with HEOS150 as well? Does anymore know?
regards, Kai