User blog comment:Zetman SeiwaGenji/What rank would the following characters have if they were in the Marines?!/@comment-3387274-20121205130500

Montblanc Noland couldn't have detected a bell with haki, that's not how haki works. Reighleigh described it as sensing life energy, or something like that, the upshot being it couldn't sense the presence of an inanimate object like a bell.