[kagamine]

The scans focused on a particular area. The technology works by placing 'plates' in desired location and collecting the particles that hit those plates. They could only place plates inside the pyramid where they had access, and collect from particular (sic) paths. They aimed for a best-guess area previously unknown but speculated upon. I assume they will repeat the experiment wherever possible to gather more data in the future.

[tamersalama]

That's what I'm saying - if the scans have caught the large void (by being placed in the grand gallery) and the small void (by being placed likely in the entrance hallway leading to the gallery) then they are at the proper location to capture any pathways above them. But since no pathways were detected - then the theory is likely incorrect. But perhaps the location/shape of the void isn't as accurate as depicted.