LinkedIn Crossclimb #890 is a 4-letter Crossclimb ladder from MARK to DOWN. Phase one is crossword solving: 5 middle clues yield BARK, BARN, BORN, MORN, MOWN. Phase two is ordering; phase three unlocks the combo ends tied by "A two-word phrase meaning to discount, as a product for sale.".
Middle phase answers: "Sound that might come after you say "Who's a good dog? Is it you?"" = BARK; "Where a calf may be raised on a farm" = BARN; "Brought into the world" = BORN; "Early part of the day, poetically" = MORN; "Like a well-trimmed yard" = MOWN.
Ordering phase: the valid middle chain is BARK → BARN → BORN → MORN → MOWN. This permutation is the only valid one-letter chain for these answers.
Link MARK → BARK: M→B at the first letter (MARK → BARK) (combo-adjacent).
Link BARK → BARN: K→N at the fourth letter (BARK → BARN).
Link BARN → BORN: A→O at the second letter (BARN → BORN).
Link BORN → MORN: B→M at the first letter (BORN → MORN).
Link MORN → MOWN: R→W at the third letter (MORN → MOWN).
Link MOWN → DOWN: M→D at the first letter (MOWN → DOWN) (combo-adjacent).
Complete ladder: MARK → BARK → BARN → BORN → MORN → MOWN → DOWN. The combo clue "A two-word phrase meaning to discount, as a product for sale." describes both end words together — "MARK" and "DOWN" each differ by one letter from their adjacent middle rungs and satisfy the shared top+bottom prompt. Pattern: unique middle order — Only one middle permutation forms a valid ladder from top to bottom — if ordering feels stuck, recheck a middle answer.