Where there links between Transylvania and Austria?
In a sense yes there were, take a map of Europe before 1914, or even 1918, and look, Transylvania is a part of the Austrian Empire.
Okay, that is one of the links, what about others? in 1867, Transylvania, a province of Hungary, joined with the Austrian Crown.
I wonder what would have happened had not Germany risen to power by 1914, and allowed Austria to lure it into a war...