The recent reply I just made here to someone brings up this interesting way a favorable EED prior to date of claim could possibly be awarded.
We don't talk enough about the date the entitlement to a disability award "arose"
This case is a good read of how this works.
http://www4.va.gov/vetapp10/files1/1007467.txt
This is the key part of this case regarding this concept:
“Once service connection has been established or denied on the
basis that the claimed disability was noncompen