Also I must say that this is based on what I have experienced. Coach has not made a promise that we will have OAC by the end of foundation. I still think people be very close, but will let him decide if this is something that realizable by everyone.
Also I didn't mention the front lever OAC link. I have seen that fl work ogre increases pull-up strength. It definitely helps with scapula strength that you would need from a dead hang pull-up but does not carry over well into the rest of the pull-up motion in my opinion. You have said you had very strong biceps coming into GST. It is likely the lats and scapula control were the only weak link in your OAC. This may be why fl was so effective in healing you get it.