The top row is a bingo, as well. On top of the episodes you marked there, Riker’s love interest, Carmen, is killed in the teaser of “Silicon Avatar.” Next, they dud a Rashamon style episode when Riker is accused of killing a scientist in an act of jealousy. Cannot remember the title of that one. Lastly, the pilot crossed over with TOS with Admiral McCoy.

Oh, I’m sure there’s plenty of other matches, but I just do it in episode order to see HOW quickly a series hits a bingo, ya know?

And it’s an interesting question as to whether the Original cast cameos count as crossover episodes. I guess you could make an argument for it. I was thinking more stuff like, you know, Jessica Fletcher and Thomas Magnum teaming up for a two parter between shows, but I can see the case being made for those cameos counting as crossovers.