[1] Paul Sidwell notes that Austroasiatic/Mon–Khmer languages are lexically more similar to Bahnaric and Katuic languages the closer they are geographically, independently of which branch of the family they belong to, but that Bahnaric and Katuic do not have any shared innovations that would suggest that together they form a branch of the Austroasiatic family, rather forming separate branches.

Internal diversity suggests that the family broke up about 3,000 years ago.

[2][3] Unclassified Bahnaric languages of Cambodia include Mel, Khaonh, Ra’ong, and Thmon.

[8] Note that Sidwell (2009) later classifies Cua as an independent branch, namely East Bahnaric.

Paul Sidwell (2015:183)[9] lists the following Bahnaric lexical innovations that had replaced original Proto-Austroasiatic forms.