“I may be wrong, but my understanding is that the Catholic Church will give the Holy Communion to any Orthodox when they ask for it.”
I think you are right though around here that has been stopped after a complaint from the Metropolitan to the Cardinal.
“The instruction to the Orthodox is to obey their bishops, however, if they ask, they will be given Communion.”
I suggest that one hierarch giving communion to another hierarch is a completely different order of magnitude. For example, if you or I were to go to each others’ parishes and receive communion, we wouldn’t be establishing “communion”; that’s a relationship between hierarchs exemplified by actually receiving communion. But this Romanian thing is between hierarchs.
It is, but by the same token, when an Orthodox hierarch presents himself for the Catholic Communion, he cannot be advised to obey his bishop.
Loosely related to this: when I traveled to my Russian mother's funeral last winter, I asked two of my Latin priests if I could take Orthodox Communion on that occasion. Both replied citing an appropriate canon law affirmatively, since the occasion excluded the possibility of going to a Catholic Church. Of course, they also urged me to ask permission from the Orthodox Father first. As it happened, there was no Communion at the funeral service at all.