Originally Posted by zarqu
Yes. I'm lead to believe that there's some invisible protective field surrounding our heroes, caused by the Gate. Barragan can sense this barrier, and doesn't even try to go around or under the visible Gate.
I haven't watched the episode yet, but in the manga, he says something along the lines of "What's taking them so long?".
He thought something interesting was going to happen after all that fancy footwork, and was waiting to see what it was. So yeah, it was arrogance.