Interesting tidbit: While I was scrolling through r/starwarsleaks, I read a thread regarding the death scene of Ben, in which it points out numerous inconsistencies in the shots (i.e Rey clearly delivering dialogue that have been cut out) that suggest that they originally were planning to have a completely “different ending” in which Ben Solo could’ve lived.

Link to reddit thread:
https://www.reddit.com/r/StarWarsLeaks/comments/eetirx/the_scene_where_ben_dies_is_actually_reversed/?utm_medium=android_app&utm_source=share

Link to original twitter post pointing out the isses:
https://mobile.twitter.com/Centennial_2/status/1209242571639267328

JEDIT: Here is the OP of the Reddit post’s idea of the actual sequencing of this scene:
“I think that the right sequence in this scene is: he comes back from the pit, heals Rey, lies down due to exhaustion, she wakes up, pulls him up, they do talks, he laughs and then they kiss, implying that they both would’ve survived.”