That's amazing. I think the ending without the ship is just better. So that's why brains of many people, including mine, made it to be that. I reject your reality and substitute my own.

"There was an interview with the cinematographer who had argued for a more open ending with the two of them in the boat and you don't see or hear the rescue ship. So that was under consideration for a while. Maybe you read the director or someone taking about it?"

It's entirely possible that I didn't even come up with the better ending to remember on my own.