From The Wall Street Journal "GE Burned Out" story, https://www.wsj.com/articles/ge-powered-the-american-centurythen-it-burned-out-11544796010
the article gets to this quote at the end...., "Welch, now 83, has slowed from his relentless peak, but was an ubiquitous presence on Nantucket this summer, never hiding his disdain for the man he chose to succeed him. He fumed about the operational failures in the power business, and the execution of the pivot. Welch readily greeted old acquaintances with a grimace about the latest news of the company, saying he gave himself an A for the operation of his old shop, and an F for his choice of successor.
"I'm terribly disappointed. I expected so much more," he said this week. "I made the best choice I thought I could make, and it didn't turn out right."