(Help) Ross Coulthart Interview on Black Triangle UAP

Does anyone know an interview where Ross Coulthart talks about black triangles?

I’m trying to find more information on black triangle sightings.

I’m having a hard time remembering visually because he almost always does interviews remote from his office so it’s difficult to pick out which interview it was from.

If you know of other videos discussing it, that would be helpful too.

I know of videos from Sean Cahill, Terry Lovelace and David Grusch discussing triangle-shaped craft and looking to compile more information.