Since no one has started the thread for March 2022 AOS filers, here's my timeline so far:
Marriage based F1 to AOS with USC
Feb 25 mailed paperwork - USPS two day priority certified. They "lost" it, then found it.
March 11 arrived at USCIS Chicago lockbox
March 15 Text received with receipt numbers (march 19 notices arrived in mail). NBC with an IOE receipt number.