Out of curiosity, why would it really even matter if they merged.
If they are united in Eucharist?
Isn't the Orthodox understanding of the Eucharist that when your receive the body & blood, that you are in 100% communion with every Orthodox Christian Worldwide? (of course "Orthodox" meaning the ones that your jurisdiction is in communion with)
If the real point is the Eucharist and sacraments, the jurisdictional issues really only mean a "churchy", "money", and "property line" issue. I could not imagine this happening. However, sure, anything is possible. But within the same communion, I just don't see the point I guess??