Bluesound Vault Combined with Node 2

Yes, the Node 2 or 2i will communicate with each other but I have found only if they are connected via an Ethernet cable.   They do sport WiFi interfaces but their WiFi interface leaves a lot to be desired.   It doesn't take much for it to bomb - distance more than 10 or 12 feet, one wall of sheetrock, and forget it. 
I have two Node 2's and one Vault 2 and I have given up trying to use the Vault 2 and the Nodes via WiFi.   I now use my Vault 2 for ripping only, store music on a separate Network drive since the Vault is invisible to Roon, and I limit myself to the Bluesound app for control.   My BlueSound equipment was supposed to be Roon compatible but short of hardwire Ethernet connection, using Roon with it was impossible for me.   Frankly, if I had to buy the stuff over again, I wouldn't go the Bluesound approach.   I really need the WiFi stuff to work flawlessly.   

Spatial...  I appreciate sharing your experiences. I do notice that neither the node or the vault like wifi very much, or bluetooth for that matter. And i hear you re the need for a wired connection to both. The good news is that I can test it. I have a mesh wifi system and I can move one of the mesh nodes to my bedroom and test how the Node 2 “talks” to the Vault (if, as you say, the Roon should work with a wired connection.) If it works well, I may just buy another node to my mesh system to solve that problem. If not, the Node 2 will go on eBay! Thanks again. L.

 other problem with having more 1 Bluesound unit is the updates.  I have 3 systems in my home, and had a Vault 2 in one, the Nodes in two others, and one of their boom box units in my kitchen.  The updates are frequent and over time the Nodes and the boom box stopped working as one of them would be unable to complete the update-check enough threads here and you will find others saying the same thing.  The updates are supposed to be optional, but several times I’ve checked the skip the update tab but it launches the updates regardless.  I also wish that I had never gone the Bluesound route, but if you do it, confine yourself to just one unit, skip the whole House thing.
 My recommendation is to get a NAS to rip& store your CDs to.  It will work with your Node and any other streamer you pick moving forward.  If you decide to go the Vault2 route as your ripper/streamer, pay close attention to back up, because if/when the VAult2 fails, you want to retain your music, unless you intend to keep the CDs.
  I keep my files on a Synology NAS.  I have a Bryston BDP3 streamer in one system, an old PC as a streamer in another, and I use the Vault2 as a streamer only in the third. The Nodes and the Boombox are expensive doorstops