A season 8 episode of MASH was a real Alda family affair. When the sitcom debuted in 1972, it was intended that Alan Alda’s Hawkeye and Wayne Roger’s Trapper would be equal co-leads, just as the characters were in the Robert Altman movie of the same name. It soon became apparent that Alda was the breakout star, and Hawkeye became the de-facto lead. Rogers was one of the first MASH actors to exit the show when he felt Trapper’s role was diminishing, while Alda would become a bigger creative voice behind the scenes.

https://screenrant.com/mash-show-lend-hand-alan-robert-antony-alda-father-reunion/