Counterpolint: A sumline variant with Matt Tressel

Today's Video:

Another fascinating puzzle.

Excuse me, whilst I go write out some lines however,

"I must stick to my new year resolution." "I must stick to my ..."

Link to Play:

Counterpart by Matt Tressel https://sudokupad.app/nj79avibfq

Rules:

Normal sudoku rules apply.

Equal Split Lines: Dots split lines into segments with equal sums. Digits may repeat on lines but not within a segment. Different lines may have different sums.