My wife and I have not been technically separated (she sleeps if another room in our house) for a little over 2 years now. Things are getting better but we are not there yet. I have to admit that if it were not for our 12yo son we may have gotten legally separated. I have read here that people separated way longer 2-5 maybe even 10 years have gotten back together. Others have never gotten back together so there is no real time line...
Doc
And if I claim to be a wise man, well It surely means that I don't know