Dueling Parry and weapons with the Parry tag

[Thorvald Runeforge]

When using the fighter's Dueling Parry in conjunction with a weapon with the Parry tag do you end up with a +3 bonus to AC rather than the usual two?

[Vlorax]

No you'd get +2 instead of the normal +1.

Both the Parry trait and Dueling Parry give circumstance bonus, you don't combine bonuses of the same type, just use the higher so just +2.

[Goldryno]

Circumstance bonuses do not stack so you would only be able to benefit from the highest bonus.

"Source Core Rulebook pg. 444
...There are three other types of bonus that frequently appear: circumstance bonuses, item bonuses, and status bonuses. If you have different types of bonus that would apply to the same roll, you’ll add them all. But if you have multiple bonuses of the same type, you can use only the highest bonus on a given roll—in other words, they don’t “stack.” For instance, if you have both a proficiency bonus and an item bonus, you add both to your d20 result, but if you have two item bonuses that could apply to the same check, you add only the higher of the two."