Seth is more than fine working in silence, not even thinking about talking, not that he really could with his hands occupied with the debris.

The way Gyre takes on the role of knight, calms down the distressed, formerly trapped person down merely by talking...

Seth admires Gyre for that. He knew far to well he likely wouldn't be able to do that even if he tried. So he leaves that to Gyre, so he won't mess up and make things worse.

Instead he surveys the area for anyone else trapped.