In the 4th episode of the Gatty Lecture Rewind Podcast, Michael and Sireemas Maspong sit down with Daniel Kaufman to discuss his Gatty Lecture, “Between Mainland and Island Southeast Asia.” In his lecture, Daniel shows how research in linguistics so far has focused on the eastern contact zones between Austronesians and non-Austronesian (Melanesian/Papuan) populations. With the exception of the Acehnese and Chamic languages, much less attention has been given to western Indonesia in this regard. To Borneo.