How does an interbank [international] transfer work?

Question

Payment systems

Suppose some very rich person sold all the shares and real estate converted everything into dollars. Bank X has $10 billion in country A. He wanted to move to some small, poor country B (which has a GDP of less than $10 billion). It may not necessarily be some poor African country, but for example Montenegro or the Maldives.
In this country B, he opens an account in bank Y (the total money in the bank is much less than 10 billion dollars, we choose a country where a foreigner can open an account, or it is easy to obtain citizenship)
He transfers all the money from an account in bank X to an account in bank Y (all 10 billion dollars)
Is it possible?
How fast will this happen?
What can be the commission?
How quickly and is it even possible to withdraw cash from bank Y?
During what time?

Answer 1

If you have electrical problems, call an electrician, not a plumber.
If I were you, I would send these questions to several Banks or specialized resources.
ps
As a rule, physicists with such a balance in the Bank receive the status of "premium" and a personal manager. Some very rich person can also turn to his PM.

Answer 2

extremely stupid investment options

Answer 3

No
Won't Happen
Big
Can't They Don't Have That Much Cash

Answer 4

- It is possible, but there are certain rules and restrictions. In general, such operations are usually done through offshore companies and offshore bank accounts. It is safer and controlled from any country
- from 3 to 7 days usually, if there are no comments from the currency control of both banks. However, I repeat, if you have such an amount, this is not necessary - you just keep this amount in any offshore bank and have access to them 24/7 from any country in the world
- The commission can be discussed in advance. If banks respect you and you are a respected person - then from 0.1 to 3% usually
- Such amounts are usually not cashed out :))) There are cash-out offices of the international format. You will be able to receive your money within 1-2 days, sometimes faster. I repeat, when you have an offshore bank and an account there - you will forget about cash
- Answered)