Tts to voice assistant speaker groups

Hello, I am struggling to find out how to setup speaker groups to combine multiple preview voice assistants, google minis/hubs, apple home pod minis, and alexa devices?

Is there no way to create a speaker group that can broadcast to multiple differing speakers available to HA?

One goal is to be able to broadcast TTS to a few different groups of dissimilar speakers.

Another would be to eventually leverage music assistant to send music to.

Searching I find older topics involving sonos and google, but I don’t see anything that lets me simply combine multiple outputs to a group output.

I attempted to work around by creating multiple tts to each individual speaker, but that is cumbersome and not scalable.

after re-enabling MA (and removing plex, due to memory limitations), and further exploring, I found that MA can make PLAYER groups that TTS can use.

MA > MA settings at bottom right > click speaker at top right > click add group player.

I was looking for speaker groups, but I guess I should have instead looked for player groups.

Does “broadcast” function not work between all the different voice assistants. Curious