...Does Xehanort just want to be grumpy and moody? Tidus doesn't figure he's going to be able to help him ease up, so he's on the side of giving up on arguing any point. Sometimes, you just want to be a grumpy potato in a blanket. It happens.

But at least for Xehanort's latter remark on pendants, Tidus raises up a hand, and from it appears a bulky-looking forearm shield. Fortunately, he's holding the straps (so it doesn't fall on his head), and he gives it a wave above his head.

A small wave, mind.

"I'm not feeling anything different," he says after a moment. "...if the room isn't blocking the magic," he then adds. That's a possibility.

A possibility that won't help Xehanort feel better (or will just credit his suspicion), but.