It was after all Walt’s story, and it wouldn’t have worked if Hank worked out the truth back in Season 2.
Can anybody really blame Betsy Brandt for not wanting to watch that terrible scene?
His on-screen wife who spent five years acting opposite him would have had it much harder!
Seeing Hank come so close to bringing Walt to justice, only to be murdered shortly after his partner in the desert by neo-Nazis was heartbreaking for viewers.