רב אחא בר עזא

Rab Achah bar Azah said in the name of Rav Abaye [(it seems that it should be Asi)] before Rav Chisda. Rav Menuna sat before him. Before Rav Huna [in the version of our text, Rav Achah bar Abba sat before Rav Huna and said: Rav said, "The king shall reign" (Rav Bibi)] Rav Nachman bar Yitzchak taught thus. In the Talmudic source, Arachin (21a).

Rava bar Azah, perhaps it is a textual error, and in Kiddushin (1:2) Rav Adda bar Azah said in the name of Asi, perhaps it is a textual error. And in Perek Acharon (49b) Rav Achah bar Ova said in the name of Asi two times, and without doubt, all are one, and it is a textual error in one of them.