IIRC, or my early morning lack of caffeine is causing hallucinations, the Unitah also had some form of buffer arrangement on the end sills of the freight cars so the couplers would stay somewhat in tension of the curves and reduce the tendency to jackknife. the buffers made it hazardous if not impossible, for a trainman to couple air hoses in the standard location. So they raised them above the sill.
This isn't unheard of in the general system. The DM&IR did the same thing on their 100T "Minnesota Pattern" ore cars because the wheels of the outside axles extended beyond the endsill to allow for a large enough dump gate to release the sticky hematite ore. A good number of these cars had both high and low hoses reduce compatibility issues.