Bangandu language
Encyclopedia
Bangandu is a Ubangian language of Cameroon and Congo. Its placement in the Ubangian family is unclear: Ethnologue lists it in with the Gbaya languages, but says that it might be related to Ngombe (CAR), which is itself uncertain, being listed as Ngbaka
but possibly intelligible with Southwest Gbaya.
Ngbaka languages
The dozen Ngbaka languages are a family of Ubangian languages spoken in the Central African Republic and neighboring areas. It includes Pygmy languages such as Baka and Gundi...
but possibly intelligible with Southwest Gbaya.