I had an interview a few years ago also: I went to the office and explained that I was going to receive some "atypical" sums of money, that the reason was that I got paid some works in Bitcoin, and that I was declaring them also to the tax office. That I was asking before because I'd heard that some banks were freezing accounts related to cryptos.
She answered that it was totally ok for them, that they don't usually care about how their clients earn their money, but that she would write it down if I wanted, just in case a workmate ever raised an eyebrow about the transfers. She asked me if I would agree to make a short financial test with her (so she could sell me their products, taking into account my tolerance to risk) which I failed on purpose
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I have never had any problems so far, but it is true that I always try not to exceed some reasonable limits per transfer.
Anyway, I think that it could be a good piece of advice to use P2P services instead of directly withdrawing from crypto exchanges, as it is true that some banks don't like the latter, but wouldn't notice anything odd in a reasonable amount of transfers between individuals.