i don't think there is any kind of pattern for BGC status and DM... Even though BGC is 'NA' for majority of applicants, they get DM very soon after it changes to 'in process'. at least thatswaht i have seen before in this forum. That doesn't mean they finish Back ground check in couple of hours or 1 day. I feel like its up-to the visa officer to put whatever status he wants in the application. Unfortunately this entire process is not at all transparent.My BGC was never "N/A" it went straight to "we are processing your app - will let you know when we start" (May 4th applicant) - if your theory is right that N/A will be processed first - I am doomed :-(!