I thought Alexa had messed up when she met up with Mark - she seemed to miss his hand then grab it.
I think all the judges see what they want to see when it suits them (or the producers

) Carrie Ann isn't the only one that does it.
Notice Julianne didn't see her brother's partner mess up.

Since the other team had a perfect score, it only took ONE judge to give a 9 for them to not have all perfect 10s too.
I also think Tamar is hurting herself and not listening to her partner to step up. She doesn't have the greatest attitude.
It must be hard for Tamar to live in Toni's shadow. There probably is a lot of competition between them, even if they get along. Reminds me of the movie,
The Bodyguard. What Bruno said about Tamar coming on so uber strong at the beginning, with a stalker-like quality to win, I've seen that in Toni.
Toni was performing on The Grammys one year with Kenny G. Kenny started the song with his soft jazz, solo intro. Then Toni literally stalked onstage toward Kenny in an overy-dramatic way, that absolutely looked ridiculous in comparison with Kenny's overly-relaxed style. It was like they weren't in the same song or performance. But, Toni was determined to make a STRONG, dramatic entrance. Kenny new she looked ridiculous. He just kind of looked at the camera & shrugged slightly like, "It is what it is," and kept playing his saxophone clarinet in his relaxed way. And Toni wasn't changing to match him no matter how ridiculous she looked or how out of sync she was with him.
I think both sisters have been taught to just come on strong, no matter what. So I think it's hard for Tamar to be open & vulnerable, which is what she'd have to be to trust Val more and listen to his advice.