history - Why the Jerusalem Talmud is not mentioned in the Bavli?

1. The JT was compiled some 150-200 years before the Bavli (WIKI), so the most of the disputes in the Bavli took place when the JT was already finished.


2. The Rabbis (Tannayim and Amorayim) traveled all the time from Israel to Babylon and back.



3. I don't recall any mentioning of the JT as the book in the Bavli (not the single rulings of R' Yochanan or other Israeli Rabbis).

Why is it so (or am I mistaken)?