The ground level extends over the tracks that the southern trains use. As the map indicates there is a large space between the food court we know and the other food court … that space is the tracks.The ground level map extends well past the location of Walgreens. As I mentioned above, the stairs & elevator on the lower level map appear to line up with those near the eastern edge of the ground level map.
The lower level map doesn't show a food court there, just Potbelly, Starbucks, L'Occitane, & Hudson News scattered among a sea of unoccupied or non-public areas.
I did ask a guard in an area on the ground level that crosses to another building if there was a food court in that building’s basement and they said they were not aware of one.