Ah... ah. Oh yes, he was no dummy. Only the oblivious would be unable to see the clear solution. The question was getting both of them up there, however. Maybe there was a switch beyond that glass paneling...

They were just going to have to find out. Shadow was going to have to utilize his portals in the very same positions, and once Chell passed through his first one, he had to relocate it and then reverse the portals. He did it just as he planned, placing them so that he would direct her to the source of the excursion funnel. Once she got through to the other side, he'd switch, and then he'd reverse at the right time.

One, two portals were fired, and he lied in wait. It was only a matter of time now...