Defending Challenge interaction with Glorious Challenge

[savno138]

In building an Order of the Flame cavalier with the Castellan archetype, I found a conundrum with the interaction of the Defending Challenge and Glorious Challenge abilities.

Glorious Challenge states:
"A glorious challenge does not count against the cavalier’s number of challenges per day, but otherwise acts like a cavalier’s challenge class feature.
When he issues a glorious challenge, the cavalier takes a –2 penalty to AC for the duration of the glorious challenge (this penalty stacks with the usual –2 AC penalty against opponents other than the target of the cavalier’s challenge)."

Defending Challenge states:
"At 12th level, the castellan takes no penalty to Armor Class when using his challenge ability."

Does Defending Challenge negate the stacking AC penalty of Glorious Challenge? I normally would not think so, except for the statement that it "otherwise acts line the cavalier's challenge class feature."

What would y'all say?

[d'Eon]

I'd let it remove the base -2 penalty from the challenge, but not the stacking penalty from Glorious Challenge. I don't think the archetype was written with Order of The Flame in mind, and it cuts out car too much of the penalty for what it gives up otherwise.