I can’t offer anything on the particular injury as far as VA and C&Ps but as far as CRSC, there are a number of people on here way more knowledgeable than I but I just initiated the process and have spent time looking over open source court records on cases with the Army Board of Corrections to understand what type of claims and evidence are approved/disapproved. They want VERY specific evidence tied to only one single event. It sounds like you would likely have that injury tied to a single airborne op so get/keep the medical documentation that is specific to the operation and injury coinciding, jump log would be good if it shows the particular jump was as part of an ftx and/or had combat equipment, was mass tac, night jump, or anything showing it was more than just an admin jump. I hadn’t come across many denied claims for airborne operations so I wouldn’t know how to gauge if it really matter the specific type of jump like that but I’m going to guess it would be better for the claim if it was tactical rather than just an admin jump. The few claims I came across denied while claiming airborne op injury were guys saying they had knee and other injuries from combined years of jumps. Like I said it’s gotta be just one single specific incident, whether as “simulated warfare” or combat, etc.
A number of claims that I came across related to training exercises were absolutely absurd but an equal amount could probably have been legitimate but folks just did not have medical records that stated and tied the injury to the specific event.
Your effective eligible start date for crsc will be your date of retirement, yes, your correct about that but I’ve seen commentary about folks filing the claim while still active in other branches but I’m not sure if they were supposed to be doing that, idk, maybe one of these experienced guys can answer that.
Like I said though, I just filed a claim and the HRC response was that claims are taking 90 business days right now, then, if approved, it takes 10+ days for dfas to get the approval letter, then depending on the time of month they get it to process the first payment could come the following month or the second following month because of pay processing cycle. Backpay will take another 2-3 months it sounds like.
There’s probably more accurate recent info out there on how quickly VA payments begin after retirement but I retired I think 26 June 2020 and was actually paid the next month for July. I mighta just really lucked out but I hope more often than not it turns out like that.