 At times, distinction between or ascription to the two areas is difficult, some material can also be confused with Corinthian vases.Often, Attic vases of low quality are mistaken as Boeotian.There was probably some level of exchange of personnel with Attica; in at least one case, Bird-Horse Painter, an Attic artist emigrated to Boeotia, the same also probably applies to the Tokra Painter and certainly to the potter Teisias the Athenian.