Complex sentence: Talk show host Conan O'Brien makes a very brief cameo appearance in the episode as a non-speaking patron at MacLaren's; he can be seen in the second part of the episode, watching on as Barney races out of the bar.
Split into simpler sentences: Talk show host Conan O'Brien makes a very brief cameo appearance in the episode as a non-speaking patron at MacLaren's. He can be seen in the second part of the episode, watching on as Barney races out of the bar.