Does Betrayal's Sting "Chance to inflict an additional Poison" scale past 100%?

Hi everyone,

English isn't my first language, so I’m using a translator to help clarify my questions. I appreciate your patience!

I'm looking for some clarification on the new unique ring Betrayal's Sting.

The tooltip states:

"(25—40)% chance to inflict an additional Poison on the same Target when you inflict Poison"

With Noxious Catalysts, this goes up to 48%. With the new Volatile Vaal Orb, we can potentially push this number even higher. Furthermore, using the Nameless Bloodline ascendancy, we can equip up to three of these rings.

My questions are:

Does this chance scale past 100%? If I reach, say, 120% chance through multiple rings and Volatile Vaal Orb outcomes, does it guarantee 1 additional poison and give a 20% chance to inflict a 2nd additional poison?

Are there any other mechanics in PoE with the exact same "chance to inflict an additional XXX" wording? I'm trying to find a precedent for how this scales. For example, does it behave similarly to "Chance to Impale" where anything over 100% is usually wasted unless specified otherwise?

If anyone has tested this or knows of a similar mechanic with the same wording, I’d appreciate your insight!

Ok, from the wiki "% chance to inflict an additional Poison on the same Target when you inflict Poison: This modifier effectively grants up to 40% more poison stacks, or 48% with

Noxious Catalyst
. As an offensive property, this modifier is inherited by your skills, and still applies to skills used by proxies, like mines or mirages."

So basically it is communicating that

1:) when you poison something

2:) you have a chance to apply ONE (1) additional poison

So basically during the poison damage calculation it has that 40% chance to duplicate the stack it is calculating