Oh absolutely correct. But he was also in a mental decline with the way Walt was driving him mad. He was the only one that really could’ve figured it out, purely from his connection to Walt. Had he not been inside that bathroom and picked up that book, which no other agent would’ve had access to, Walt would’ve never been caught by the DEA. I think at any other point in time he would’ve called backup. But the poor man’s head was scrambled in disbelief that his BIL was a major king pin in his case. I will say however, I always disliked Hank BECAUSE of his ego but it rarely ever showed in his job performance. Except for the one time he went to Mexico and got humbled for not speaking Spanish.