I have been personally working on this problem of relationships for some 27 years and have just completed a self published book/manual on it called:
Rethink Perfect – The Upside of Uncertainty and the art of moderating our own disputes
The idea revolves around 6, agreed to, rules of engagement.
3 for speaking and 3 for responding.
My brother and I have been using this form/spirit of conversation for the last 20 or so years and seems to be serving us well.
Having a definition of what is a conversation, can also be very useful.
We agree that a conversation is the process of converting our own concepts, through feedback, into agreements and possible solutions.
Anyway lots more to share that may be your Adjacent Possible, for a free down load go to http://rethinkperfect.com