Large dollar amount transfer to fiat bank

Ok, desperately seeking advice. Liquidated most of my btc on 2 cex's to purchase a home. Now i need to transfer it to my personal bank account. My bank is refusing to give me any advice whatsoever except try it and find out! I have made small transfers in the past from both cex's. How do I not piss off the AML algorithm. How do I not get my funds seized. If they put a hold on the funds…what happens then and how long to a resolution. Any advice from knowledgeable individuals welcome. I do not use DMs TIA