'Infinity War' Is The Most Ambitious Crossover Event In History - Chespirito beat Marvel to it

Yes.

Both shows had the same cast, a small group of nine current actors (and as the shows ran, they had to deal with some of them leaving or dying) often having to interpret more than just one character. There are notorious moments when both characters played by the same actor appeared in the same shot thanks to the magic of editing, which was very advanced at the time if you ignored that they coudn’t edit the lower shadows of their bodies.