Oprah Winfrey co-hosted the 8 a.m. hour of ABC’s "Good Morning America" this morning when Robin Roberts called in to talk to her, USA Today reports.

It was Roberts’ first live chat since her bone marrow transplant, the story notes.

Says the story, " ‘I’m standing in for you, Robin!’ shouted Oprah, who co-hosted the 8 a.m. hour." Roberts replied, "’Usually I’m watching [‘GMA’] in between my toes in bed. You got me on my feet. You got me dancing this morning,’ said Roberts, who could be heard but not seen. ‘It’s all about being uplifted.’ "

Roberts, 51, later added, accoriding to the story, "I am so incredibly blessed to be doing as well as I am. Some days I do feel like I am 35 days old and can’t get my head off the pillow. But those days are becoming fewer and fewer."

Roberts also said, the story adds, " ‘It would be a whole lot easier not to be so public when you’re going through something like this.’ But, she said, her mom told her to be of service to others. And she has heard from many family members going through similar challenges. ‘It’s a privilege to be a messenger.’ "