I currently have 2 echo speakers without the zigbee hub built in. I have a Philips hue bridge and control this via Alexa. All works fine and either echo can control all the lights.
If I purchase an echo studio with build in zigbee hub, I can remove the hue bridge and control the lights directly with Alexa build into the studio.
My question is. Would the 2 existing devices know to use the studios zigbee hub to control the lights or would I need the hue bridge left in place. I will be able to test this once the studio ships and answer my own question but would like to know in advance if possible.