Some believe that BP's are ONLY by themselves in the wild. They believe that BP's experience nothing but stress and unhappiness when they are together with other BP's with the exception of breeding.
Others (like myself) are no so quick to go along with these theories, especially when our own observations and experiences show us differently.
The point of the video is it shows an instance in Ghana where 3 BP's were living together in the same hole. Could it have been just been a chance encounter because it was the breeding season? Sure it could have. but maybe it wasn't. The female already laid eggs so it had to at least been the very end of the breeding season if not past the breeding season. Either way, she wasn't breeding any more.