Defining "One Building"

I'm curious how others would interpret MRP 2 Must be a Complete Building or Space as it relates to an outdoor sports facility. The facility has a series of 'buildings' that are connected (some contiguously) as a single 'super-structure' (to use USGBC's phrase). Yet under the definition of gross square footage "covered walkways, open roofed-over areas, porches and similar spaces" are excluded. So if the concourse areas that connect all the areas of the stadium are excluded I'm wondering if it can still be considered a single 'building'? Thanks!