I think that we are connected, through the tadpole, to anyone infected by the tadpole, and that their thoughts and desires seep into ours.
This was demonstrated at the very end of the first EA run, when you went on the boat and while it was sailing, reminisced about what you had done. Regardless of your choices, it would ALWAYS end up with a couple of lines that said that something within you wanted "blood". At the time, we assumed that this was connected to Astarion, your resident hemogoblin, but now that Dark Urge is out of the skybox, those invasive thoughts are probably coming from him.
Other examples would be whenever you were with your dream lover (sexy!tadpole). You usually get three options to their advances: lean into them, resist them, and RESIST THEM WITH FLESH-TEARING VIOLENCE. The last one was a little confusing, but now that we know about Dark Urge, who is also probably
it makes sense that it seeps into your conscience.
This would possibly allow a very psychically strong tadpole carrier to control others with more psychic damage, which is what the opening image of the intro video (and a lot of D&D stories) is all about: one brain controlling them all. And also where Omeluum's ring could come in REALLY handy, once the non-origin version of Dark Urge appears in the game and tries to override your will.
On a lighter note, I could also see how this could affect couple dynamics, if their tadpoles were "in tune" and they were able to read each other's minds and finish each other's sandwiches, so to speak. In a run where your PC romances Astarion, who would like to keep the tadpole, it would be devastating to "lose" your own tadpole and permanently lose that special connection.
Anyway, the permutations and possibilities are VERY exciting. I can't wait to play through them all.
