I love that tutorial by Josh. I used that A LOT on most of my cylindrical intersections. It looks quite nice. I also saw a tutorial by masterxeon001 here that covers a more complex case (I think he meant to make 2 different cylinders with different sides to teach the topic can apply whatever way you come across it):
I do have a question @duerer how do you reference someone’s posting so that it immediately goes there? I really like that feature.