Just thinking aloud here. A few posters have said they don't think CB is linked to the TB murder, which I kind of agree with. And IIRC others have said they think it's possible he abducted MM but not necessarily other kids who went missing.
However, what I'm wondering is how often does someone murder one child but then never do it again?? Obv many get caught so they never do it again. But aside from being caught, how many have killed one child/person only? So IMO that's why LE is trying to find links to the other unsolved cases, as it's so likely that at least some are connected to others.
Particularly in the TB case, it is so brutal and horrific that it seems highly unlikely that his killer never ever killed anyone else, unless the killer died before having the chance to do so.