Math genealogy project says Herstein was a student of Max Zorn (the guy the lemma is named after), but Zorn was a student of Artin! Zorn doctorized under Artin

Math genealogy project says Herstein was a student of Max Zorn (the guy the lemma is named after), but Zorn was a student of Artin! Zorn doctorized under Artin in Hamburg in 1930, before Artin moved to Princeton. https://www.genealogy.math.ndsu.nodak.edu/id.php?id=6526 https://www.genealogy.math.ndsu.nodak.edu/id.php?id=6526