Find the movie "Brainstorm (1983)" and watch it for clues. Walken and Wood play husband a wife in a high tech mind scanning future with a rocky relationship and moving reconciliation. Their affection may have gone beyond Hollywood make believe. It looked real to me. Otherwise, why was Christopher Walken a guest on the boat?
When Natalie Wood died near the end of principal photography, studio executives tried to kill the film and claim the insurance, saying that director Douglas Trumbull could not complete the film. However, Trumbull’s contract gave that decision to him, and he insisted on completing it, using a stand-in and changing camera angles for the few remaining shots of Wood’s character. The resulting hostility between Trumbull and the studio executives meant that this would be Trumbull’s last Hollywood film. He has since devoted his efforts to effects work for IMAX films, theme park rides and the like.