Seth sees absolutely nothing wrong with any of this. This is going smoothly, as far as he's concerned. Maybe that's why he returns the greeting with a brief nod in return.

"Walk with me. I will escort you to your hotel."

And then he gets up off the wall and pushes the door open, expecting Irahl to follow. Seth could be in his best mood of the century and he would still conduct himself with as little downtime as mostly-humanly-possible.