Powershift isn't a manual transmission, it's a simple geared range transmission (shift when stopped) in front of a hydraulic transmission that is nearly identical to an automotive A/T, it can be shifted on the go. One significant difference from automotive: no torque converter (fluid coupling). So after the Powershift's internal clutches have engaged (gently) into a specific gear its a pure mechanical connection clear through from the conventional clutch up front, back to the differential.
that helps me understand this thing
thank you