The show, airing on CBS, is being hosted by the comedian Nate Bargatze.

© Jordan Strauss/Invision, via Associated Press

The estate of the best-selling author, which has intellectual property rights to “ER,” and the creators of the new hit TV show are waging a legal battle over whether it’s a stealth reboot.

© Photo Illustration by The New York Times; NBC; HBO Max

The industry is in a state of transition. The front-runners for best drama at the Emmys this Sunday explain the competing tensions.