Step 1 : Introduction to the question "How long was the longest Oscar acceptance speech?"
The longest Oscar speech was given by Greer Garson at the 15th Academy Awards after she was named Best Actress in 1942 for “Mrs. Miniver”. Her speech ran for nearly six minutes. It was shortly after this incident that the Academy set forty-five seconds as the allotted time for an acceptance speech and began to cut the winners off after this time limit. The shortest Oscar speech was given by Patty Duke at the 35th Academy Awards after she was named Best Supporting Actress for “The Miracle Worker”. Her acceptance speech was, simply, two words—"Thank you"—after which she walked off the stage.