Are there ways to send fiat from exchanges like Kraken directly to Interactive Brokers?

IBKR only accepts transfers from your own account. Unless the exchange has personal IBANs for sending money, it won't work,

https://www.interactivebrokers.com/en/support/fund-my-account.php
 
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It is difficult to get an account with Swissquote if you have no trading experience. They ask tons of stupid questions about trading stocks and currencies.