[Source](https://ew.com/daredevil-born-again-season-2-connected-spider-man-brand-new-day-exclusive-11827485)

The Marvel Television people are communicating with the people making a movie, and people are making a big deal out of it like it's a new thing. Over a decade ago, the writers of Agents Of S.H.I.E.L.D. would get the screenplays for the movies early, and work with the movie team to do the exact same thing Winderbaum's talking about. How else do you think that had perfectly planned and timed tie ins to Thor: The Dark World, Captain America: The Winter Soldier (especially The Winter Soldier), Avengers: Age Of Ultron, among others. One day, you would watch The Dark World, and a few days later, the team would be cleaning up after them on an episode of the show, and a few weeks later, Sif would show up. Then, you'd watch an episode of AoS, and for some reason something's wrong with S.H.I.E.L.D., and then you would see The Winter Soldier, and then in the next episode of AoS, you would see the ramifications (both in the larger sense of S.H.I.E.L.D. and on an emotional level) of that immediately.

tl;dr: This shouldn't be considered something great, when Agents Of S.H.I.E.L.D. did it over a decade ago.
Why are people acting like this is something new when Agents Of S.H.I.E.L.D. did it over a decade ago?