While Fear The Walking Dead's series finale offered closure to many character storylines, the show missed the ideal chance to bring back two popular characters. The Walking Dead's 8-season spinoff ensured a series ending that didn't act as an obvious bridge into other new spinoffs like the main show's finale did. Focusing on concluding storylines was integral to Fear The Walking Dead because much of the critique before was around contrived stories and too many characters to incorporate. Thankfully, the show achieved this by way of plot points like Alicia and Madison Clark's reunion.

https://screenrant.com/fear-walking-dead-finale-nick-john-dorie-cameos-return-need/