Select/restrict devices to be connected to Google Assistant or Alexa

Is there a way to restrict or select devices that can be controlled via Google Assistant and Alexa? I have a specific use case where I want two of my fans that currently have zigbee controllers to be controlled via smartthings but want them to be connected to Bond in case Smartthings loses zigbee connection. In that scenario, I can use the Bond app to control them while I fix the zigbee connection later. I dont need these fans exposed to Google Assistant or Alexa. Smartthings provides a way to select which devices I can share with GA and Alexa. Wondering if you have something similar. Else I might have to wait for ST integration.

There’s not currently a way to do that, but it has come up in earlier discussions. We will add to the roadmap.

Thanks for the update