Two balls simultaneously ejected (event A) from the point x=0 in some inertial frame. One rolls in the +x direction with speed 0.80 and eventually hits a wall at x = 8.0 ns (event B). The other rolls in the -x direction with speed 0.40, eventually hitting a wall at x = -8.0 ns (event C).
Is the space time interval between B and C space like or time like? Could these events be casually connected?