When you receive severance pay the DoD will take a percentage of your VA payments until the severance pay is payed off.
Ex. I'm receiving a severance pay for right shoulder instability/ labral tear, that was rated at 20% by the DoD. The VA rated this injury as well and you are not able to receive disability for the same injury twice. My VA percentage is 90% so I would be receiving roughly 1800 a month. However, due to the severance pay they will take the 20% from those payments and I will be receiving roughly 1400 a month until the severance pay is payed off. Hopefully this makes sense and helps ease your mind.