Complex sentence: The season climaxes with a very rushed wedding for Darlene where immediately after the ceremony, realizing how much has been changing, Dan falls to the ground in the middle of nowhere from a heart attack.
Split into simpler sentences: The season climaxes with a very rushed wedding for Darlene. Immediately after the ceremony, realizing how much has been changing, Dan falls to the ground in the middle of nowhere from a heart attack.