As an update, I finally heard something about my application (First adult passport, applying from the US) which has been processing since 26/5. On 23/6 I received an email from someone on the Overseas applications team saying I need to send proof of name change for my mother since her name is listed different on my birth certificate compared to her marriage certificate to my father. Was nice to actually get something other than a generic email – now I have to get a marriage certificate from her previous marriage which will be fun since all of the offices in Chicago are closed due to COVID – oh well!