can you use hard line? for example polished stainless steel brake line with correct fitting, & hook to a barss connector maybe 1 foot away, & your hose joining, & route to a more hidden location, & then use a fitting to scew into from 1 side, the larger size, & smaller size on other?
did I explain that right? or something like Russel lines & fittings you can find something suitable.
I have brazed 2 different metal lines together when I didnt want it to show, & had only the 2 clamps to show, but was on a budget. I have done 1/4 to 5/16, on gas line, not saying it is the best method, but it worked for years.