Said Rav Ami to Rav Ashi?
On Gittin 59a, we have Rav Ami say something to Rav Ashi. As Artscroll has it:
They are aware that this is troubling, for Rabbi (sometimes Rav) Ami is a third-generation Amora, a student of Rabbi Yochanan, while Rav Ashi is sixth-generation. Well, maybe not at that level of detail, but enough to know that something is off.
They therefore suggest in footnote 14 that we should “perhaps” emend to Rav Assi. Now, there were several figures by that name. There is a first-generation Amora in Hutzal; there is the one who’s title may be a typo (or else before he obtained semicha), the third-generation colleague of Rabbi Ammi; and there is the sixth-generation colleague of Rav Ashi.
Except, his name is not really Rav Asi, but Rav Athi. It is a consistent error in the Vilna Shas. I wrote a whole article about this in the Jewish Link, on Ketubot, which just so happened to be the Tish’a Be’av edition of a year ago. You can read it here: Yaakov’s Fear (or via flipdocs).
In terms of our own sugya in Gittin, indeed, sources have Rav Athi. Thus, the printings:
and the manuscripts:
Arras 889 makes the Rav Asi mistake, but the others have Iti or Athi.