Spawn particles where two spheres overlap

[MrBaskerville]

Hi

I´m trying to make an effect where there´s two players. They both have a spherical forcefield surrounding them. When these two forcefields overlap I want to spawn particles in the area where the overlap is happening, like this:

I can easily check if the overlap is happening, but I can´t find a way to figure out the coordinates of the overlap. Is there a way to find these vectors?