Tutong Link in Indonesia

There is a river in Tutong called Sungai Penabang. There is a place in Banjarmasin in Kalimantan, Indonesia where there is a group of people who spoke the Tutong language and the group claimed that their ancestors came from Pangkalan Jong, Tutong. What is the link between the two?According to a Tutong legend, Pangkalan Jong in Kampong Keriam, Tutong is one of the earliest inhabited places in