What was Azerbaijan's reported role in UAE-Saudi slush funds linked to Trump's son-in-law?

After US President Donald Trump's son-in-law Jared Kushner was linked to accounts holding UAE & Saudi slush funds, it was revealed that Azerbaijan served as transit point for these transactions. In 2017, $750 million was reportedly deposited into a UAE-linked account in USD from an Azerbaijani bank. Moreover, in 2018 UAE President had transferred $1 billion for Kushner via Azerbaijan.