Does it give you paper cash? Because I can receive money back from Kraken to my bank account too, but that means 100% local perverted KYC AML trouble even if it’s clear that I sent the exact amount to Kraken from the same account recently.
They wire the money to my bank, of course. I've done this pretty regularly with several different banks for years, and have never been asked even a single question by any of those banks, or ever had them delay the availability of my funds.
I can't tell you from personal experience if it would be the same if my amounts were a million plus, but they are not insignificant amounts either. I'm quite sure that attempting to deposit similar amounts of physical cash at a bank would be at least somewhat challenging.