I did some digging and found this in SECNAV M-1850.1 Chapter 4 section 1 (B)
" IPEB. The IPEB reviews the case file and makes initial
findings without the Service Member present. For IDES cases,
within 15 days of receiving disability ratings from the VA
Disability Rating Activity Site (DRAS), apply the disability
ratings using the diagnostic code(s) provided by the DRAS to the
Service Member’s unfitting conditions and publish the
disposition recommendation."
I am not sure if this includes the QA phase or not. The portion that describes the QA phase did not have a specified number of days required to complete....
At least this is an idea of the expectation of when to receive official findings once the VA claim is finished. Whether or not this timeline is enforced by anyone that's a different story lol. I also don't know if non-working days are computed in that total day count