Paine Webber Equity Partners 01 interview questions

Standard opening electronic & phone coms. Very reasonable & good-natured in all facets. Then first in-person with HR. Still reasonable. Second interview, same day, in-person with next level up. Very clear, positive, optimistic. Wonderful exchange. I honestly love this guy. Then third interview, same day, two levels up from initial intake stage. Gets a little weird from there. Job requirements seem to have mysteriously changed in almost every possible way after level-2 interview. Hmm, puzzling. Less than ebullient reception. Interview turned from positive intellectual exchange at L2 to hostile interrogation at L3. I feel like I've suddenly walked from a good place into one where the temperature just dropped 40 degrees. Disappointing; and also a little crestfallen. But, I finished it out to the bitter-end regardless. So: Good news, bad news?