DoubleDoku

It’s t-t-t-two puzzles in one! For the low, low price of nothing, you get not one, not two, but 1.55 puzzles! It would be two puzzles, but four of the nine boxes are shared, so they probably shouldn’t count twice.
One of the two grids is outlined in a shade lighter than the other.

Rules:
Normal Gattai-2 rules apply. That is, there are two overlapping 9x9 Sudoku grids. Within each Sudoku grid, each row, column, and 3x3 box contains the digits 1-9. The boxes at the center are part of both grids.
In cages marked with a dashed line, digits sum to the small number in the top left corner of that cage.
Cells separated by a white dot contain consecutive digits. In cells separated by a black dot, one digit is double the other. Not all possible dots are given.

Estimated difficulty: 1.5 out of 5