I filed Sept 2020 and as of Sept 2021 I have been ready to schedule for an interview. My case is with the National Benefit Center (receipt number begins with MSC) and they have no processing time to even check if my case is outside of normal processing times. And you cant even talk to anyone! Don't worry, we are all in the same boat here. I am just worried that my 'extension' is only until December 2022 and what if I do not receive a new extension. I have not been able to apply for new jobs as the visa expiration date is a big issue.