I remember when it was a 15 minutes show, that was too long.
On the great retro style Ellery Queen series with David Wayne and Jim Hutton (1975-76) the father said:"It says here in the paper that a television network is going to experiment with having a news program each evening at 6:00. It will never work. The American people will never stand for it. Seeing what's on the news on TV at the dinner hour! They'll get indigestion!"