What can be seen in what way?
"If all was known....."... what are you trying to say here? Not following.
If we're to have this discussion, we should probably all use the same definition of collusion. It feels like you're trying to apply a different definition than we are. I don't find it to be collusion if it's just a 'secret'. Because the whole definition goes on to say "conspiracy...especially in order to cheat or deceive". Without deceit and cheating (what I'd call the evil part), it's just cooperation or something done in secret. Something being done in secret (though we all love transparency) doesn't mean they are cheating or deceiving anyone.