Damage Reduction Caps

[DarkBass]

Ok, I have what is probably a simple question and I would just like to confirm before I start wasting gear slots.

If Damage reductions cap out at 50%:

For items like Defending Ring and Twilight Torque, that say "Damage Taken -5%", I understand this applies to both physical and magical damage.

Does that also apply to both physical and magical damage reduction caps? For example, say I have -45% PDT and I equip a Defending Ring on top of that. Does that bypass the cap and give me -55% or does it still apply and only give me -50%?

The only pieces of gear that are outside the natural damage cap is Burtgang(Mythic Sword) and Aegis(Relic Shield).
And gear like twilight torque, defending ring, Mekira Meikogai, that german named belt, the mollusca mantle, askar feet and ogier's helm all have straightforward -DMG taken. This applies to physical, magical, and breath damage.

The Mythic sword adds more PDT outside the natural cap since it is a Mythic, and the Aegis adds more MDT outside of the cap since it is a relic(but these are recent-ish changes).