Parasitoid wasp and mud dauber

Description:

Small Brachymeria wasp, about 3mm and fine wasp of Crabronidae measuring about 1cm approximately. https://www.youtube.com/watch?v=XR5t06IW...

Habitat:

Nest located on the wall of my house.

Notes:

I registered a Brachymeria prowling Crabronidae nests, the Brachymeria stayed a long time on the nest, bothering the Crabronidae that worked in the sealing of the nest carrying small mud balls. I'm intrigued, could this Brachymeria be a parasitoid for Crabronidae's mud nests? Please, if anyone has information about this event, I'm very grateful.