Yes, they can. Even if they're from different "mothers," they're a BTA. BTAs generally recognize others of the same species and usually coexist without issues. Plenty of hobbyists keep multiple Colorados from different lineages in the same tank, and they'll often end up touching or even clustering together. There can be some minor irritation while they're settling in, but it's uncommon for BTAs to have the kind of serious chemical warfare you see between different anemone species. As always, the bigger concern is giving them enough space to find a spot they like and protecting powerheads while they're moving.
Since BTAs reproduce asexually by splitting, different CSBs from different lineages aren't necessarily genetically identical, but they're still the same species. Small gene differences from mutation and evolution don't usually prevent them from coexisting.