Glass off, and right off the bat we spot the Duo's dual batteries. One battery in each half is shaping up to be standard for folding tech. Unlike other foldables though, the larger battery in the Duo is bonkers huge—easily double the capacity of its sibling.
The Duo's hemispheres are connected by two multi-strand interconnect cables routed through the hinges. They remind us more of old-school MacBook display cables than the flat ribbon cables we've seen in other hinges.