One distinctive difference between the two is the sound change associated with the Middle Aramaic fricative θ (th), often rendered as l in Hulaula, and s in Senaya.
In Tehran, Senaya has been heavily influenced by the Urmežnāya dialect of Assyrian Neo-Aramaic spoken by the larger Church of the East community there.
1995 a research project under the leadership of Estiphan Panoussi in cooperation with Wolfhart Heinrichs granted by the Swedish Council for Research in the Humanities and Social Sciences analyzed the Senaya Dialect (Title: The Christian Senaya Dialect on Neo-Aramaic Texts, Grammar and Dictionary).
The project produced three volumes: Senaya, A Christian Neo-Aramaic Dialect (Originally in Persian Kurdistan) (400 pages).
The first recorded music with Senaya lyrics was released by Paul Caldani in 2002, titled Melodies of a Distant Land.