Are You Afraid of Halloween and All Saints?

How are Halloween and All Saints' Day connected together? Do they really celebrate the same thing? How have they gotten so far apart from one antoher?

Some web articles about Halloween:
https://www.newadvent.org/cathen/01315a.htm
https://steadfastlutherans.org/blog/2012/10/halloween-a-short-history/
https://www.beliefnet.com/faiths/catholic/2000/10/surprise-halloweens-not-a-pagan-festivalafter-all.aspx
https://www.history.com/articles/halloween-haunted-house-great-depression

A couple of Inspiring Philosophy videos that dive into Halloween origins:
https://youtu.be/fu-5BmAzbrU
https://www.youtube.com/live/8UyY468_Izk?si=AqrGk0J8sNabnCZR