NEW YORK (AP) — Oprah Winfrey's much-anticipated interview with Lance Armstrong was seen by a total of 4.3 million viewers in back-to-back airings Thursday night on OWN.

But the interview with the disgraced cycling champion drew only 3.2 million viewers for its first airing, an audience that fell short of OWN's most-watched program: an interview Winfrey conducted with the family of Whitney Houston last March following the singer's death the previous month.

During the highly publicized program, Armstrong confessed to taking banned substances for all seven of his Tour de France victories, among other admissions.

The second half of the Armstrong interview is scheduled to air Friday night.