I was referring specifically to those rare cases where someone exercises their right to withdraw coins and Federal Reserve notes despite it being virtually always imprudent. For example here[1] is a story about a man who asked for $600,000 in cash. The bank didn't have that many coins and bills on hand and actually took considerably longer than seven days to acquire it.

[1] https://www.investopedia.com/terms/n/notice-of-withdrawal.as...