Given John Candy's success with "SCTV," you might guess that eventually "SNL" would come calling, trying to recruit Candy over to their stable – and you'd be right.
In 1980, there was a big shakeup at "SNL," causing executive producer Lorne Michaels to exit the show (via Mental Floss). First, he was replaced by Jean Doumanian, and then after that, by Dick Ebersol. In an attempt to change the cast from relatives unknowns to big stars, Ebersol recruited the likes of Billy Crystal, Harry Shearer, and Christopher Guest, so it makes sense that he would set his sights on Candy as well (via CinemaBlend).
Per the book "Saturday Night," Candy didn't want to be stuck in the middle. He "was mortified at being caught in the middle of the tug of war between Saturday Night and SCTV." Instead, Candy chose to remain with "SCTV," but he did go on to host the show in 1983.
"SNL" or no "SNL," Candy continued onto super-stardom anyway, until his tragic death. According to Beach Metro, he's today remembered on October 31 in Toronto with "John Candy Day."