What could be the hold up???

So I am at the point of the process where I have submitted my NARSUM on 11 December and my PEBLO pushed it forward on 14 December, here we are almost a month later and still no DA 199, has anyone here experienced the same painstaking waiting game? I got my 100% T&P rating from the VA, I know I'll be retired (even with almost 22 years of total service). In my mind with only 1 condition unfitting for continued service what could possibly be a logical reason for the lengthy wait?
data-matched-content-ui-type="image_stacked" data-matched-content-rows-num="3" data-matched-content-columns-num="1" data-ad-format="autorelaxed">