There seems to have been a mistake in the information for the new Walk of Echoes content regarding the conditions for how a Surge Walks occur, and it has been fixed as of last night.
Correct information:
Apologies for the confusion!
I have a bit of other relevant information to share as well while I am here!
In order to make it easier to access Walk of Echoes, we are looking into adding a home point or way point to Xarcabard (S) in a future version update.
Additionally, after clearing an existing walk, if a surge walk occurs there is a ten minute interval before you can access the surge walk. This is a system from the original Walk of Echoes, but we are looking into shortening this time period.