How to build an editable view of two entities linked together?
You are making a relation and editing a field of the relationed content "Survey", if a "User" is relationed to the same Survey content, will change on all of them.

If it is a different node "Survey" for each "User", it should't change all of them. I just did a test with your conditions and everything is going great. Could you give more information like configuration, multivalued, etc. of  those fields?