https://people.com/tv/this-is-us-milo-ventimiglia-on-what-to-learn-from-jacks-loss-final-season/

"You know, Dan (Fogelman) told me, 'Get ready for this episode.' When we first started filming the season, he was like, 'Mi, episode four. It's a big one...He didn't really give me much more than that," says Ventimigla. ALSO: Ventimiglia delves into filming "Don't Let Me Keep You." (https://variety.com/2022/tv/news/this-is-us-jack-mom-dead-series-finale-preview-milo-ventimiglia-1235158499/)

It was one of if not the best episodes of all six seasons. Just wish they had brought the cat home with them…but I suppose kitty would be better off with Jack’s mother’s boyfriend.
This one will make you cry more than likely. :( But then again, don’t they all…? !