Puzzle #600 - Interconnected Secret

This year for Secret Solver I was assigned feadoor, someone I know is quite a good solver and constructor across a variety of puzzle types. I wanted to try to lean into as much of those types as I could, remembering the Skyscrapers and Sudoku from a GP round, Yajilin from Yajilin and Variations, and Heyawake from Heyawake Hike. The rest of the genres were picked to cooperate with the connections between grids, and lead to a final secret. I did a lot of planning before any actual construction here!

Anyway, here's all the rules. The short version is that standard rules apply for each individual puzzle, and that cages marked with the same letter must have the same pattern of shaded cells. Country Road requires all regions, and unused cells are considered shaded. Nanro (Signpost), the numbered cells are considered shaded. Skyscraper Sudoku is 1-6 in each row, column and region. Domino Yajilin counts the number of shaded cells.

penpa interface

I really should have taken my own advice and not made an interconnected puzzle - it's very stressful when something starts not working, or seems like it might not resolve. I also ended up doing most of the writing over 2 days, with a few scattered bits of progress before that point. I even brought a notebook with transcriptions of the starting points (determined links) for 3 puzzles to a relatives' for Christmas Eve, and finished those puzzles there!

To think my original idea involved having to figure out the cage matching as part of solving... that would have been impossible within the time I ended up having, and especially with the other constraints.