In comedy, timing is everything. And the arrival of "Conan O'Brien Must Go'quot; on the Max streaming service on April 18 proved to be excellent timing indeed. No, Nor is it because the show delivers some needed laughs in these, our especially fraught time. When we signed up for the service, it was to enjoy a vast library of movies and HBO originals, but after an ill-conceived rebrand, we found the stuff we wanted to see was playing