For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Here is a very interesting and eye-opening explanation as to why Passover and Easter are celebrated at different times:
Why are Passover and Easter Celebrated at Different Times?
https://www.oneforisrael.org/bible-based-teaching-from-israel/why-are-passover-and-easter-celebrated-at-different-times/