This is so domestic and couple coded. The way he glances to his boyfriend because he trusts that Carlos would know—as Carlos have said 'I know you very well.' The way he just slides easily into switching the topic to Carlos, because you know, he can't shut up about him.
So yeah, if Charles is unsure, not wanting to think (which is probably most of the time) or tired, he can rely on Carlos to do work for him. Because Carlos would know whats best for him, Carlos would do right by him.
I like to think they are married.
Carlos shouting answers in the background and Charles just agreeing with everything he says. It further proves that Charles does not think much around Carlos. Any decisions? You have a big hunky man to take them for you.
Now, according to my theory, they have made heavenly and sweet sweet love multiple multiple times. They might even be lovey dovey all together. Alone. In Monaco (now that Carlos is officially moved there).
"It was a very strong race...very strategic...a lot of things going on with tyre degradation... At one point, I thought it was not going to happen, the podium. But then in the last stint, when I put on the new hard, the tyre gave me a really good feeling and I could push..."