Warning! Contains spoilers for Fast X!After Paul Walker tragically died in 2013 during the filming of Furious 7, the team faced the difficult task of giving Walker’s character, Brian O’Conner, a proper send-off from the franchise. Indeed, Walker’s Fast and Furious role has come to define the vast majority of the action, crime, and street racing movie saga. Producer Neal Moritz said that in the immediate aftermath of Walker’s death, they were so lost that they thought they would have to cancel the movie, but instead, its ending had to be changed.

https://screenrant.com/furious-7-brian-scenes-not-paul-walker-brothers/