Sorry, Apple. Google Home got this bullhorn feature first - CNET

Send a message to all your Google smart speakers or just one, and get replies with this walkie-talkie-like Broadcast feature.

The more Google Home or Google Nest smart speakers you own, the better Broadcast works, and with the new Google Nest Audio speaker now available, you couldn't have a better excuse to expand your collection (although we might suggest waiting for a Black Friday deal).

However, even if you only have one Google Home or Nest smart speaker and it's far from where you are at the moment (e.g. you're in the garage and it's in the living room), you can still beam a message to it using your smartphone.

The next time you're ready to announce that dinner's on the table, it's time to leave or whatever other information you want to relay to the other people in your home, here's how to use Google Home's Broadcast feature to get the message across.

If a Google Home smart speaker is set to Do Not Disturb, like, for example, during homework time, it won't play a Broadcast message.

Just add the name of the speaker or the room that it's in (details you should've chosen when setting it up in the Google Home app) when you speak the "Broadcast" command and Google Assistant will route the memo where you want it to go.

Send a message to the far reaches of your home -- anywhere you've put a Google Home or Nest smart speaker.