And after having stepped out of it for good, what does the free mind do in life, what task does it have if it has any?
Ask a brain that has stepped out.
Or better, ‘step out’ yourself?
You first…
If you are not separate from me, what happens to our relationship? Action is born out of how we relate with each other. If there is no separation, what happens?
Thank you, Adeen, for your questions. What does it mean that one is separated from another? How is one related to another? How is it all manifested in life?
Adeen answered your questions with his questions, so it may be that neither one of you has any answers, and can only repeat the questions we’re all familiar with.
As annoying as this is, it’s a respite from those self-deluded enough to tell us all about what the transformed brain does.
re: “Thank you, Adeen, for your questions. What does it mean that one is separated from another? How is one related to another? How is it all manifested in life?”
How on Earth will you ever find out for sure? 
This is a good question because we take our separateness for granted, and it requires critical self-scrutiny to see how we do it.
I can’t be in a relationship with others that is any better than my relationship with my self, which is an illusion, so our relationship with others can’t be any less illusory.
The conditioned brain is primarily in relationship with its illusions (I, me, mine, being paramount), and secondarily to what is self-evidently true, i.e., what it cannot distort, deny, or dismiss.