i have been toled by wrongheaded people that this is a double bowline too (and a bowline bend):
this is about the weakest way to join two ropes and i also been told it is wrong. a perpetuated myth. the real non-weak way to do it is to make the rabbit hole with one rope and use the other rope end as the rabbit. then do the opposite to finish it. then it is one of the strongest ways to join two ropes.
bowline craziness in the middle of the night.