Hi Pavel,
I'm glad you pointed that out. (It's always nice when making a mistake becomes an opportunity to learn something.)
There are also some Syro-Malabarese and Syro-Malankarese eparchies which are suffragans of Latin Metropolitans (other than the pope). (See e.g.
http://www.catholic-hierarchy.org/diocese/dbjsm.html ) I think the Hungarian example is even more interesting, however, because it appears to be an exception to Canon 175 of the CCEO:
174. A Church sui iuris, which is neither patriarchal, major archiepiscopal nor metropolitan is entrusted to a hierarch who presides over it according to the norm of common law and particular law established by the Roman Pontiff.
175. These Churches immediately depend on the Apostolic See; however, the hierarch exercises the rights and obligations mentioned in can. 159, nn. 3-8, as a delegate of the Apostolic See.
I wonder, then, if Rome might be willing to let, for example, the Slovak Catholic Church become a suffragan of their local Latin metropolitan (if they wanted to). More to the point, I wonder if the Eparchy of Mukacevo could (if they wanted to) become a suffragan of a UGCC metropolitan
without becoming part of the UGCC.
Just a thought.
God bless,
Peter.