Light Propagation Volumes vs Lightmass for GI

Looking forward to Lumen when light baking will be a thing of the past but in the meantime…

Any lighting experts able to tell me the difference between using Lightmass for GI and Light Propagation Volumes?
When do you use one over the other?

The documentation only implies that you shouldn’t use both at the same time.

Hi, Lightmass means static lightning, so everything is baked into lightmaps. Light Propagation Volume is dynamic so you don’t bake anything there.