We are now on the cusp of the Avengers: Infinity War premiere, where the film in its entirety will be unveiled to select group of people for the very first time. Press junkets for Hollywood journalists have, in fact, just begun yesterday. Speaking to Collider, the Russos were quizzed on the possibility of a longer runtime for Avengers 4 revealing the likelihood of a longer sequel/finale.
There has been much debate on the actual runtime for Avengers: Infinity War which officially clocks in a 2 hours 29 minutes. We can only imagine that the speculation will intensify as we learn more about Avengers 4 in the coming months. The Russos promise of a longer film can only mean immensely epic things for the Infinity War sequel.