Wow Berta, thanks for the great information in your post and I am glad that you eventually prevailed, I know that your road was a long and hard one!
While I understand what a NOD does for you and that there is a one-year window to file it, it seems in some situations that it can be handled differently.
For example, in the situation I am assisting with, the original decision was filed in Apr 2012, decided in Aug 2013.
Evidence favorable to her exists throughout 2011-2013.
Favorable DBQ (new and material) will be sent in with a FDC reconsideration in Feb 2014.
Traditional advice is that if the reconsideration is not decided come Aug 2014 we will need to file the NOD.
But why? According to 3.400 (q), if new and material evidence is received it is as if the previous decision had not been rendered.
Say the reconsideration decision comes in Sept 2014 and denies the increase plus we did not file the NOD by the Aug 2014 deadline.
If we file a NOD on the reconsideration, it seems we are still good because as part of the reconsideration new and material evidence was provided that gives us standing for an effective date to the beginning, if evidence supports that.
I'm just not seeing the importance of meeting the first NOD deadline if N&M has been provided in the appeal window.
But I may be misunderstanding part or all of this...