Just lawyers twisting the facts as usual.

There are corrupt banks all over the world (the few that were shutdown due to 1MDB is simple enough proof). Anyone could have wired the cash, and used a fake name or position to make it look legitimate with the proper leverage.

The question is, why did not BNM flag the transaction, and was there already prior instructions given to BNM for the transaction to find its way to AmBank without proper paperwork?

The bank officer is answering questions based on facts she is aware of. The money 'originated' from someone named Price Faisal, as per the transfer order. She can't answer more then the actual facts that she is aware of.