Thanks, but about those exact numbers...isn't the matter usually academic if you can do it in less than the perscribed amount? For example, I could have just named any other character the pair encountered in Girls' Night Out before naming Supergirl, like this: Batgirl 1. Poison Ivy (fought in GNO) 2. Livewire (also in GNO) 3. Supergirl (ditto) 4. Lashina (fought in LGL) It would work for almost any connection. It is very easy to stretch out to more degrees of separation if you have a direct path. In fact, the general idea of the original game (Six Degrees of Kevin Bacon) is to do it in as few degrees as possible. The fun way of getting people to guess the path you chose, or a similarly obscure path, is to make all those restrictions, like "no sidekicks" or no male characters, or nobody voiced by Phil Lamarr, or whatever tickles the fancy of the question-maker that day. Saying you have to do it in exactly the same amount doesn't really encourage the same level of lateral thinking. Equal or less than should really be the general rule. There might be some very isolated instances where having to use more degrees adds challenge, though I have no idea what they would be. Still, any asker, if they discover such an instance, could make such a restriction for their question, right?