You are correct, I wouldnt run a hose/line to the fitting on the turbo, too much heat there, that's why they have the hardline, same with the ko3 assy.
Are you sure the male fitting on the turbo pipe is 18 mm?
if so use a 9022F-08-18 on the turbo line
block assy 9069-08-XX
discounthydralichose.com
P.S. My new KO3 hose assy came with two new copper washers and A new banjo bolt,I installed this and a new turbo oil feed with my new KO4/KO3 Hybrid
G/B/