For Hal, the general deal with his maternal uncle is that Tavis is terribly shy around people and tries to hide it by being very open and expansive and wordy and bluff, and that it’s excruciating to be around. Mario’s way of looking at it is that Tavis is very open and expansive and wordy, but so clearly uses these qualities as a kind of protective shield that it betrays a frightened vulnerability almost impossible not to feel for.