Hmm.
Some people would say all Tennessee fans are friends. Even family. We're one big community.
You don't roll that way. Got it.
You're wrong, and you're not experienced enough with teams (of all types, sports, military, whatever) to understand what I'm saying.
Team chemistry never stands alone. It is always built to bind together the parts. And those parts can be strong or weak. But no matter how strong they are, they'll fall apart at the first sign of pressure unless the chemistry binding them together is solid.
Tell you what: build a house out of really good, high quality bricks. Name them after your defensive players, if you wish. Then stack them together with play-dough as your grout. Then see how strong the house stands, and for how long.
An example closer to home: bad team chemistry is what cost us vs South Carolina last fall. It wasn't a problem all season, but it was a problem that week. And we paid for it, big-time.
Team chemistry is not the only thing, no. It is the most important single thing, though. Otherwise "team" devolves into just a bunch of "me"s.
Go Vols!