Here, you are assuming that the narration of a failure must identify some causal process that links the PC's action to the unhappy outcome - here, the breaking chandelier.How does failed check affect the structural integrity of a chandelier?I know it's just an example, but if my PC swings from it, I don't see how gracefully I swing from it affects anything. Anyway, minor point on an example.
That's not an assumption that obtains in "intent and task"/"fail forward" adjudication. (For an example in the context of D&D, see the example of a Skill Challenge in the 4e Rules Compendium - the final failure produces an uhappy outcome for the PCs, but it's not directly caused by any error/failure on the PCs' part.)