Hmm might be right the khazars seem to have been an offshoot of the previous western trkic khagnate, previously the Turkic khagnate that split. Although this is mainstream history. It's very general but something like this is apparent. The ohguz another Turkic group possibly where under vassalage from the khazars until a certain period possibly when they converted to Islam. After the battle of tallas (China vs the caliphate, turks where on China's side an at the last minute change sides) they ended up becoming the Seljuk. The khazars are surrounded in mystery but its no secret when reading Chinese, arabic, Russian texts they were supposedly extremely immoral. There lands where s no go for traders and are called things like name stealers where merchants who crossed through there lands where murdered and robbed than the robbers assumed there identities and took over there business. This act is possibly what we still see practised today.