He was between appearances on financial cable-news programs, to talk about fourth-quarter earnings.
Richard L. Trumka, president of the A.F.L.-C.I.O., also appeared on the program to talk about organized labor.
Broadcast past midnight, listeners called the program to talk about personal dilemmas and seek advice, bringing up such sensitive topics as sexual abuse, and premarital and extramarital sex.
Chip Saltsman, a Republican strategist, and Joe Trippi, a Democratic strategist, join the program to talk about whether the 2016 race has already begun.
Senator Jack Reed, Democrat of Rhode Island, and Representative Mike McCaul of Texas, chairman of the House Committee on Homeland Security, join the program to talk about the situation in Syria.
Representative Corrine Brown, Democrat of Florida, will also be on the program, to talk about accusations of voter suppression efforts in her home state.
Getting one software program to talk to another has been tricky ever since a programmer created the second mainframe application and tried to connect it to the first.
Five months later, he appeared on an Atlanta news program to talk about his illness — an appearance he felt was imperative.
Meanwhile, on television, former United States presidents and others for and against the reunion appeared on Sunday news programs to talk about the drawn-out battle.
Representative Luis V. Gutierrez, Democrat of Illinois and a member of the Congressional Hispanic Caucus, and Representative Mario Diaz-Balart, Republican of Florida and chairman of the Congressional Hispanic Conference, will also join the program to talk about immigration.
