Just for everybody who wants to know. I send without any problem in between 2 hours my IOTA from one Bitfinex account to another.
IOTA is a great coin to invest because the technology is amazing.
DAG is non blockchain based technology that used the server to validate the transaction to decrease the transaction fees or make it cost zero for every transaction. I can say that was a direct payment that will be delivered instantly. IOTA same with byteball.