yep, each 'String' on a guitar (for instance) keeps resonating after being plucked, so one String can be played at a time but the decay of that string rings on into the others.

The 2hp Bell works in a similar way but has 6 voice polyphony, though each bell-strike can have quite a bit of a different resonance to the last, kinda de-tuned.

Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.

https://youtube.com/@wishbonebrewery