How make Alexa routine play chime on all speakers

[xFlip]

How can I set up an Alexa routine to make an announcement on all my Echo speakers?

I can do this for one device but how can I play the announcement on all speakers?

[jwlv]

In the routine, instead of using Alexa Says, use Messaging > Send Announcement.

I know, it really should be the same thing, but Amazon treats these things differently and separately.

[xFlip]

That's been working well on my Echo Dots.

However I've discovered that I can't get the message announcement on my Sonos One speaker with Alexa built in.

The Sonos One speaker appears in the list of devices in Alexa to select from and I can make a tick mark next to it but nothing plays when it's supposed to.  Alternatively, selecting "All Devices" doesn't make the Sonos One play the message either.

Any idea how to do get Alexa to say something in a routine on my Sonos One speaker?