I think I'm having at least one coherent thought about why I like the setup for chapter 4 that happens throughout chapter 3 so much.
Very initial skim of chapter 3 is the silly shenanigans that we've become accustomed to through chapter 1 and 2, but the little bits of exposition and tonal shifts added to chapter 3 in the main route (no s rank gaming) set the stage for someone who was always present in that house, looking on as things changed, without getting any closure or info on what actually happened. Then he finally gets to get some closure (learning where Asriel is), but Kris has changed in the time they've been apart from Asriel, Dess and Noelle, and Tenna? 0 clues why.
(right now my thoughts are situation wise, tenna is catching up with how his kids are doing, after years of being absent from their lives (not his fault, not any of the kids faults how the fuck were they supposed to know that their TV was sentient) he's not the step father but the father that stepped up even though functionally? Still a deadbeat. so the tone goes from the "OMG HOW ARE YOU!!!" to "why is everyone so sad and distant what happened" but like. Absent for years, can't exactly ask Kris to pour their heart out, especially since they never were close)
This parallels very closely to how the story has been delivered to the player thus far and as a literary strategy for delivering little tidbits to transition to the heavier chapter later on it's absolutely brilliant