Do both Hamlet and Laertes jump down into the grave?
Yes. However, the grave is not done yet. The sexton Clown was mostly talking instead of digging. Also, Ophelia hasn’t been placed in the grave yet, because it isn’t done. The grave excavation is less than waist deep, so Hamlet and Laertes are clearly visible as they struggle. The sexton Clown will return from his duty of ringing the bell during the funeral, and finish the grave later.
