Thanks for this. I always thought there's some form of direct mechanical linkages in case all systems fail
"In the normal flight control mode, when the stabilizer is manually shut down or failed, pitch trim is still available. Pilot pitch trim inputs change the PFC trim reference speed. The PFCs then reposition the elevators to trim the airplane."
"In the secondary and direct modes, both the primary pitch trim switches and the alternate pitch trim levers move the stabilizer directly. There is no trim reference speed."
Judging by the two statements above, if the system goes into Secondary mode, does moving the control wheel pitch trim switches move the stabilizer if the Stab Cutout is active? I suppose not cause the hyd sources for the stab is cutout. So if that's the case, what is the pitch mode in secondary or even direct mode if hyd cutout is active?