Is that area not also in a direct line inboard from the forward turbine rotors?
It may have been a handy place to run the aircon pac ducting but I was under (the probably flawed) assumption that this was the reason for the no window zone on turbo prop and jet equipment.
Just seems strange that all I have seen are the same when you line up the high bypass fan or prop with the fuselage. Metal every time.
Something to do with keeping uncontained failures external?
Best all
EWL