I only gave the bare bones of what happened. There was so much politics and arguing which went on that it would be impossible to go into here. Essentially, Dundee Hibernian went bust, and out of business. Three of their businessman (shopkeepers)supporters thought it a shame that the ground was lying derelict, and thought it a good idea to start a new team. I cannot argue that the Irish Question was addressed, but it was not a major issue, hence the decision to resurrect the name for purposes of league admission. There were no members of the old club involved with Dundee City whatsoever, as they wanted to start from scratch as a brand new outfit, hence the new name (Dundee City) and new colours (black & white).
Indeed, we had the unusual situation of Dundee Hibernian on the park, but trading as Dundee City FC. The reason United associate themselves with the Hibs is simply confusion over the mists of time, going back to when nobody was that interested in club history, and it was simply assumed that it was a case of same park - same team. I did an in depth history of Dundee Hibernian some years ago, and where it is probably true to say that had there been no Hibs there would be no United, there are no physical links between the two.
There! An interesting wee digression but hadn't we better get back to what we're here for, ie Rangers?