I got a notice that my I-751 and N-400 interview were scheduled on October 17, 2024. It's been 11 days and I still have not received either notice via mail (and it's not showing on my USCIS Login portal documents). Does any know (1) how frequent Joint interviews are, and (2) how long does it take to get the notice in the mail? I feel like I shoud have received it already if they scheduled it on October 17 and mailed the letter then presumably.