Foulborn The Red Nightmare Fire-to-Chaos converted effect Not Working on Timeless Jewel Passives

As shown in the screenshot, I have a Timeless Jewel socketed in the upper jewel socket. It transforms two Notable Passives into “+50% Fire Resistance”

Then, in the right-side jewel socket, I socketed Foulborn The Red Nightmare, which provides the effect: “Passives granting Fire Resistance or all Elemental Resistances in Radius also grant Fire Damage Converted to Chaos Damage at 100% of its value.”
The radius of The Red Nightmare does correctly cover the two transformed “+50% Fire Resistance” Notables mentioned above.

Under these conditions, I should be gaining 100% Fire Damage Converted to Chaos Damage, but in actual gameplay my skills (e.g. Rolling Magma) do not benefit from the Fire-to-Chaos conversion.

To ensure this wasn’t just a display or tooltip issue, I tested it by running a map with “reflects 15% of Elemental Damage.” When hitting monsters with Rolling Magma, I still taken a large amount of reflect damage, confirming that the Fire-to-Chaos conversion is not being applied.

Here is the PoB link I am currently using for test:
https://pobb.in/PIuJkBco9BmZ

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tuyn76801#0402 wrote:

Under these conditions, I should be gaining 100% Fire Damage Converted to Chaos Damage, but in actual gameplay my skills (e.g. Rolling Magma) do not benefit from the Fire-to-Chaos conversion.

Passives in the radius of a unique Timeless Jewel are "Conquered".
If you hold Alt over the Timeless Jewel, it explains that Conquered passives cannot be modified by other jewels.

You’ve resolved my confusion

thank you.