I just watched a lot of the triathlon mixed relay back as well. It was great! Though I did fast forward to the transitions for a lot of the legs.
It was really noticeable how much the different athletes' strengths could affect the whole team's performances - but also how France performed some kind of team negative split to claw a medal from an unlikely position, and how much the Netherlands and Germany faded from a good start. The USA and GB were impressively consistent.