No, your military findings will not have an impact on your VA findings by itself.
A few caveats....I suspect, given your date of being on TDRL for about a year that you were an IDES case. The VA should have provided your final ratings under DTM 11-015. The military branches seem to be uniformly blowing off this requirement. I am going to assume that the AF PEB provided your final rating. If that is the case, it is likely that the VA has no idea about the rating from the AF right now (and, should you accept, they will likely only learn of it in calculating your pay taking into account offset...this pay info does not go directly to VA Benefits Administration and the military finding will not be able to be used to directly reduce your VA rating. It may be that if you are better and your symptoms are better, that the VA could re-look your case at some point and reduce your rating. However, they would have to give you notice of any such proposed action and give you an opportunity to challenge any reduction. There are other technical hurdles to the VA reducing a rating. Did the VA rate you based on your degree of occupational and social impairment or did they rate based on 38 CFR 4.129 (minimum temporary rating of 50% for at least 6 months)? Essentially, the AF rating is not a basis for the VA to reduce your rating. If the VA found that you are improved, it can reduce your ratings...technically, I suppose they could use AF re-evaluation exam as evidence to support a lowering IF they have such a copy of the exam- which they probably don't.
Bottom line, it is highly unlikely that the AF finding will impact your VA rating. I suspect you may have issues you could appeal regarding the AF rating. However, depending on your VA compensation vs. your AF compensation you may not gain or lose money based on AF reduction in rating (also, taking into account Combat Related Special Compensation IF your PTSD is combat related).