It doesn’t look like TPLink Support will answer this question.

@Tony This doesn’t make sense. So can it Daisy chain at all or not. I have 6 units and I need to decide whether to return them or not. If I have to run a hardwire, I might as well get a cheap AP and...

Please someone help me with this. I have 3 M6 and 3 S4's. My primary Router is one M6. For some reason all the other Decos are connecting to the main M6 instead of one half the distance and a lot...