Logic Masters Deutschland e.V.

This puzzle is my entry for the finals of the pencil puzzle hybrid competition held on the Skunkworks Discord server. Many thanks to isajo4002 for hosting/organizing the event, and to the judges Agent, Niverio, and dumediat!

This was ultimately the runner-up puzzle in the finals, with the winning puzzle being Janus by sfushidahardy. Please also check out that puzzle, and huge congratulations to the winner!

My earlier round puzzles can be found here:
Round 1: Fillmat Statues
Round 2: Slitherlink Yin Yang
Round 3: Gokigen Nurimaze
Round 4: Sashigane Building Walk

Rules:
U-Bahn: Draw a totally connected loop network through the centers of some cells in the 10x10 area, which may branch or turn, but may not have any dead ends. A clue outside the 10x10 area indicates how many times the corresponding line shape (i.e. a cross, branch, straight line, or turn) appears in the corresponding row or column, irrespective of the line shape's rotation.

Chiaroscuro: Shade some cells in the 10x10 area so that each group of shaded or unshaded cells is a unique shape. Shapes that are rotated or reflected are considered the same shape. All shaded groups have an even number of cells, and all unshaded groups have an odd number of cells. Number clues in the 10x10 area represent the size of the region they occupy.

Interaction: For every pair of Chiaroscuro regions that share at least one cell edge, the U-Bahn network must cross exactly one cell edge between those two regions.