In case you're still reading this, I've updated this document to version 2, answering your comment directly and adding an alternative immediate response instead

In case you're still reading this, I've updated this document to version 2, answering your comment directly and adding an alternative immediate response instead of keeping the connection open. As this is still a public draft and not an established standard, I hope discussion will bring a consensus that one way of responding is better and a future draft will only specify that way.