5 GHz signals are reduced more than 2.4 GHz when traveling through walls, ceilings, etc. But they do go through.
Thanks for that. One more question - I also read that using Wifi extenders traditionally means less bandwidth. Without getting into the technical details (since I most likely won't understand it!), does the Orbi somehow get around this?
Would a traditional standalone router like a Netgear R7000 be better or worse if walls/doors are the major culprit?