Duch Flat Mates (Zippers): I Believe this is the First Sudoku Puzzle Break on Screen!

Today's Puzzle:

Continuing Flinty and Good City's series, the Dutch Flat Mates, today we focus on the Zipper Line which makes for an interesting puzzle. I do break the puzzle early on, perhaps you manage to avoid it!

Link to Play Along:

Dutch Flat Mates (Zippers) by Flinty https://tinyurl.com/SudokuSleuthDutchFlatZipper

Rules:

Normal Sudoku Rules Apply.

5's live in Dutch Flats All 5's in the grid must strictly have EITHER; a '1' directly above it AND/OR a '9' directly below it. It may have both, but it doesn't need both.

Zipper Lines: Pairs of digits an equal distance from the centre of a Zipper Line sum to the same total. For odd-length lines, the total is the digit placed in the line's central digit. Digits may repeat on a Zipper Line.

For convenience, centres of: - Odd-length lines are highlighted with a bump/dot. - Even-length lines are highlighted with a diamond.