For all the "they don't get along" stories, Clinton and Warren were very amicable in the rally. First name basis (Clinton and Sanders aren't on that level, for example) and they both told personal stories about meetings and phone calls they've had together talking about things that they relate to (like being grandmothers). Lots of hand holding, smiles and hugging. The body language was telling.I really do think she is testing Warren and if she passes the VP slot is hers. Obviously, the combo fires people up, but more importantly she wants to spend quality time with her and see if they can get along given history.