I'm not surprised. The way I perceive production to work is they tape all of the runs and then pick and choose what fits to build an episode.
Yeah, it's fun to pair up Rafa's outfits with which "auto 0 kilometers chulo bonito de agencia!" is on offer. It seems possible, in theory at least, to put together a list of which episodes were in which taping batch.
(Some of his outfits in S01 were quite out there -- the giant scarf, the leather jacket!)
And another interesting thing. I was watching one of the last-season eps on Azteca, and they actually showed a very brief shot of what appeared to be a studio audience applauding! It was only a few people, but I assumed all the audience noises were done in post, especially the very recognizable "awwwww" when a team crashes out.
Makes me wonder how often they have to stop recording to set up desafios, deal with health/safety issues due to dropped items or props in the cage, etc. ... and even the occasional blood-drawing injury.