The Ladder
The ladder that Gavin and Susan were fervently rushing to the rescue with was hardly going to do any good.
I'm guessing that's why the camera is on the two of them just long enough for the comedic effect of their late arrival -- but not long enough for the viewer to notice the inadequate ladder.
A ladder the appropriate size would be too much for the actor and actress to manage at such a quick clip. Not to mention the length would need a more distant shot to bring them both into the frame.