DFRobotShop Rover V2 Xbee area holes

I am looking for information on what pins on the ATmega328P if any the vias(the holes) in the Xbee1 and Xbee2 area of the V2 board are connected to.

Power,Ground, RX, and TX are obviously connected. Are there any other connections?

My attempts to search result in finding the Version 1 schematic which does not have the Xbee area.

Product code : RB-Rbo-33
robotshop.com/dfrobotshop-rover-tracked-robot-basic-kit-17.html

Only those pins are connected. All the other pins are broken out to 0.1’ spacing hose in case you want to connect them to something.