I have a problem, I have 2 homes with multiple devices and multiple Amazon Alexa Echo voice assistants, I would like to know if there is a way to separate the two homes without having two or more Alexa accounts. that is, the problem is that with an account, various houses can turn on the TV in other houses. I don’t want this to happen. So I would like to know if I can do this by integrating Alexa with HomeAssistant (I have the Nabucasa plan)?
Short answer: no.
If your Alexa devices in house A were already controlling devices in house B before HA was involved, home assistant cannot magically prevent that.