This involves considerable complexity, not the least of which involves looking for other traffic, navigating, communicating, and handling a variety of tasks involving hundreds of controlsl and indications in the cockpit. Simultaneously.
Has this changed that much in the last 20 years? I remember many years ago PA's from the flight deck letting pax know about anything interesting en route. (No, not every flight I know) No time at all even in the cruise? I think there is more to it than this.