Re: Passed the interview? How to know
passing the interview is a much broader term,
CO who calls you after your exam will tell you if you have satisfactory answered all their questions or not.
if they have any other doubts about your applications or not
they also mentions if you will wait for your oath letter or you will have to hear from a judge or not.
in any given scenarios if they do not mention to your about waiting for oath invite you must consider that there must be something wrong with your application - missing info / getting slapped with RQ / fingerprint / entry records /something is missing and you will wait for next step of action .
my CO told me withing one to three month of time you will get oath letter - everything else seems fine
i would consider this is as passing an interview because neither English nor my documents and/exam had anything wrong at all .