I think trim wheel and EFCS power the THS similarly, but via different inputs?
The damper Hyd Motor, and the actuator motor are on the same screw (per machaca's pic). My understanding is that they can alternate roles.
The Elevators are independent of one another, obviously, there is no through hull penetration for an elevator "spar". Each hangs off the TE of the HS.
The HS is attached to a continuous spar, making each leaf a part of the solid slab.
I do not know if the elevators deflect independently, (Roll?).
I cannot 'copy' my tail innards pic. It's in here somewhere, sorry.