Why is Level 15 so hard? LOL.

After gameplay I retimed this run using https://somewes.com/frame-count/ with a console FPS of 60.098813897441 which is the SNES native framerate according to http://tasvideos.org/PlatformFramerates.html and raw video framerate of 30 FPS for a total of 55760 frames or a Console Time of 30:58.656. First Frame set on the frame the game B starts and End Frame set on the first frame of Level 15 train cutscene.

I use Super NES Control Deck Model No. SNS-101 with a generic flashcart cartridge with "Nontan to Issho - Kurukuru Puzzle.smc" ROM loaded and GV-USB2 Capture Card.