I think that Galvin and Nolan are blood related but don't actually know each other and I am guessing Dom killed Nolan's mother cuz there was a scene with Dom and a long haired woman on the ground as a result he gets Nolan's childhood house I think or else how would Nolan feel familiar in his house that would also explain the lavender field . Now I have a theory that maybe the mother abandoned Galvin and that's why Dom killed her maybe as a form of revenge she caused for Galvin AGAIN THIS IS JUST MY THEORY so take it with a grain of salt
I think that Galvin and Nolan are blood related but don't actually know each other and I am guessing Dom killed Nolan's mother cuz there was a scene with Dom and a long haired woman on the ground as a result he gets Nolan's childhood house I think or else how would Nolan feel familiar in his house that would also explain the lavender field .
Now I have a theory that maybe the mother abandoned Galvin and that's why Dom killed her maybe as a form of revenge she caused for Galvin
AGAIN THIS IS JUST MY THEORY so take it with a grain of salt