Right, but Shield 0006 was only one layer deep, with further layers containing other rooms and facilities within. One layer deep was enough to protect Shield 0006 from Halo's pulse. So you can't come to a reliable or logical conclusion that protection from Halo's pulse is based on fractal depth. And as I previously mentioned, it's never explicitly stated anywhere in the lore that a slipspace bubble is why Shield 0006 (or any other installations using a similar method) were protected from Halo. It may well be that Halo's pulse can't penetrate slipspace in a meaningful way in general.