The probe is widening. The grand jury is asking questions about "The Big Guy". They're realizing this story has teeth. May or may not implicate Ol' Joe but it isn't a good look. And probably a big reason why the Dems are starting to sour on him.
Chris's biggest tell is when he flexes on his "expertise" and becomes more condescending than usual. It's bugging him, but he cannot let the Rubes know.