The big thing that disappeared down the rabbit hole was that during surgery I lost quite a bit of blood and ended up having a transfusion. I have no memory of anyone telling me about it at all until i was my local doctor a couple of weeks ago. It was quite a shock to discover how close I had come to not making it through the surgery at all.
Anyway. Next week I fly back down for my post op check up with the neurosurgeon so we'll see how that goes and if there are any other things to be discovered that I don't remember