Cyberyeti, on 2019-September-15, 15:01, said:
Actually not, you cash the clubs first pitching a heart, then cash 2 hearts, because if the hand with the diamonds has a second heart, you'll pitch a diamond on the third heart and finesse spades the other way as now the hand with the diamonds will only hold 2 (or 1) spades.
In this line, you blocked diamonds at trick one (based on a later comment), presumably unblock ♣A, cross to ♦A, run 3 club winners pitching a spade, diamond and heart. Then play 2 hearts. How do you get back to dummy to cash the 3rd heart since you already pitched a heart on the clubs? The extra winner in dummy means that West is not squeezed so now you have to make a decision which way to finesse with no squeeze possibility.