MEB Findings confusion

Currently going through Army MEB.
My PCM referred me for left pectoral nerve damage after surgery, as well as Right Cubital Tunnel & Medial epicondylitis and Thoracolumbar Strain (L1-S1 are bulging) I finished my C&P exams and was told only my back doesn’t meet Retention standards. Will PEB only be looking at my back now? Or is it possible they can still find me unfit for other conditions? I’m just confused since i’ve met medical retention point for the other conditions. Also have DA Form 7809 from occupational therapy off-post supporting my conditions as well.
 
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