I have my Eero Pro 6 which has the ability to enable thread.  I have a Smartthings v3 Hub which has an active thread network as well.  I would like to take advantage of the same network utilizing the two to work together to blanket my house with coverage.  The issue is that both devices have a static thread network and they obviously are not the same networks, security, channel, etc.  I have not found anything that indicates that you will or will not be able to utilize a single network while having multiple "border routers".