@Beetle Now that you mention it, it does seem odd that there is no long rest scene with Durge after what happens and I think that lack of a followup conversation (and I mean a proper conversation) contributes to the general feeling of incompleteness with resist Durge's story.
Every companion after their personal quest has some sort of cutscene with the player where they can talk about what they experienced and how they feel. Durge is as much an origin character and should get one too. I get that death in Faerun doesn't really have the same weight and finality to it that it otherwise would irl because of all the various means of resurrection that exists in this universe, but I feel like dying would still be incredibly traumatic, no? Hell, this would've been a perfect opportunity for Durge and Isobel to bond, because here's two people who have died before, was resurrected by a god, and nobody else in the room understands that experience more than them. Aylin too, to some extent.
I don't think a lack of a romance scene is the end of the world, but if every romanceable companion gets a romance scene after they 'dealt with their problem', I wouldn't be opposed to Durge getting their very own either. And if you're not romancing anyone, they can have a companion with the highest approval come in to comfort Durge.
I sometimes hear people say Durge is just a Tav with some extra spice thrown in and I think part of the reason is because at times Durge feels almost detached in their own story. The lack of companion reactions to their predicament is so unnatural it breaks the illusion that you're playing as a pre-established character. Which I think actually speaks to how well written the rest of the game is, so it sticks out like a sore thumb when you get moments like these where the quality is noticeably lower.