Yes and no. I refered to the walkthrough after getting stuck. Walkthrough should not be needed for a game flaw. If this was intended, the game itself should give a hint to what chests need to be opened first. I even posted a picture of the walkthrough, where you can clearly see Simon "finds something" after inserting the last chip, which I need in the area I can't access now. Do you even read my replies?
Buddie goes to find Tilman after all these mentioned events.
Either way, the grappling hook is not my issue at all. It's the last chip in an unaccessable area.