I ask the question to my Vso. I filed for 7 contentions yet only had 2 C&P exams. I was told that 4 contentions were looked at in my first C&P. It took them a few more mo. to get more info to substantiate requesting my last C&P which was my Ptsd contention. I was also told that they sometimes have enough info from smr, files, exams etc. I am in no way an expert on this...this is from personal exp with my claim.