What's the story for multiple devices being triggered by a single utterance of the wake word?

I have a Alexa or Google device in nearly every room so that '[wake word] lights [on|off]' or whatever does the right thing for that space. Alexa devices are pretty good about processing from the 'right' device when multiple are triggered. Google, not-so-much.

(Also a gap in both platforms is that they don't pass along the triggering device information)