Maybe it's me, but the second part of Oprah & Whitney's chat seemed both more emotional and, maybe because of that, less skillful on Oprah's part.
Oprah, a good interviewer but certainly never a proponent of objectivity, let her love for Whitney overflow, and so, some things were left unexplored.
Indeed, as Whitney sang Oprah teared up. She told Whitney she had been praying for her. She told Whitney she loved her. No sign that Bobby was in anyone's prayers.