Sidwell (2006) accepts that Acehnese and Chamic are related, but that they had separated from each other before Chamic had borrowed most of its Austroasiatic lexicon.
sˈɪdwɛl tˈuː θˈaʊzənd sˈɪks ɐksˈɛpts ðæt ɐseɪnˈiːz ænd tʃˈæmɪk ɑːɹ ɹᵻlˈeɪɾᵻd, bˌʌt ðæt ðeɪ hæd sˈɛpɚɹˌeɪɾᵻd fɹʌm ˈiːtʃ ˈʌðɚ bᵻfˌoːɹ tʃˈæmɪk hæd bˈɑːɹoʊd mˈoʊst əv ɪts ˌɔːstɹoʊsɪˈæɾɪk lˈɛksɪkən.