Apparently, technomancers don't need to Hack on the Fly or Brute Force in order to gain access to a grid. All they have to do is Thread Transcendent Grid, and they have access...wait... no not just access, they are actually connected to all grids. Okay, so.... the description for "Transcendent Grid" says that "You broaden your connection to the matrix..." implying that before the technomancer threaded this complex form, they had access to the matrix. Which grid were they using? Did they need to ask their neighbor if they can use their IP, or did they just pop up on whatever grid was closest to them?