In his series on Genesis Dr Chuck Missler devotes a whole video on the explanation on chapter 6 and what he calls “The Days Of Noah & Return Of The Nephilim.”
https://youtu.be/DxI6RWu0dcc?si=oyc5AEHeO1Mp2s0T
NUMEROUS videos I think, along with Trey Smith, Allen Nolan, Tim Alberino, LA Marzuli, Tom Horn, Gary Stearman (of Stearman aircraft fame) Michael Heiser, Mark Eastman, John Barnett, Korean pastor Gene Kim, Hal Lindsey, Walter Martin, Merril Unger, IDE Thomas, and others. 😁😆😄