During his 24 years as anchor of the “CBS Evening News,” Dan Rather and the program’s leadership team gathered most days in a glass-walled section of the newsroom known as the fishbowl to hash out the rundown of that night’s broadcast.

Twenty years after he signed off from his anchor desk for the last time and two months shy of his 94th birthday — Mr. Rather was at it again. On a recent Wednesday, he was leading a 30-minute video call about the headlines of the day with a former CBS News colleague, Wayne Nelson, and Alice Maggin, a former ABC News producer.

And this was no idle chitchat. It was an editorial planning call for a newsletter that they publish three times a week.

The newsletter is called Steady — a word Mr. Rather said his father used to soothe him whenever he was ill as a child — and it has more than a half million subscribers.

That is a small fraction of the estimated 18 million households that watched Mr. Rather’s broadcast at its peak after he succeeded the vaunted Walter Cronkite on March 9, 1981, or even the roughly eight million households that tuned in to his final “CBS Evening News” broadcast on March 9, 2005.

But one thing has remained constant: Dan Rather continues to relish chasing the news.