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?
 
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