Complex sentence: The Chaldeans originally spoke a West Semitic language similar to Aramaic, however they eventually adopted the Babylonian dialect of Akkadian, the same East Semitic language, save for slight peculiarities in sound and in characters, as Assyrian Akkadian.
Split into simpler sentences: The Chaldeans originally spoke a West Semitic language similar to Aramaic. However, they eventually adopted the Babylonian dialect of Akkadian, the same East Semitic language save for slight peculiarities in sound and characters, as Assyrian Akkadian.