At no time is the Trade Minister in contact with the Crown Prince after he is shot, but he is shown with bloody hands at the hospital, though his hands were clean when he picked up the necklace dropped by Frank in the plaza and the Crown Prince had already been evacuated.
When the Imperial officer commits seppuku, he is first seen kneeling with his kaishakunin (second) standing behind him and slightly to his left with his sword sheathed. In the close up, the kaishakunin is standing behind the officer's right shoulder with his sword drawn. In the next shot the kaishakunin is standing in the original position, and begins to draw his sword. When the kaishakunin performs the kaishaku (decapitation), he is behind the officer's right shoulder again.
When the Japanese officer commits seppuku and is decapitated, his head is completely removed. The ritual kaishaku (decapitation) was to be performed in the manner of dakikubi ("embraced head") with the head falling forward so the face could not be seen after death, but remaining attached to the body by a small flap of flesh. This required a skilled swordsman to be chosen as kaishakunin (second). Voluntary seppuku was an honorable death but complete decapitation was demeaning and would bring dishonor to the kaishakunin for poor swordsmanship.
Ed calls Juliana in Canon City just hours before Frank goes to assassinate the Crown Prince and the bus makes it back to San Francisco by that night. However, when she made the trip from San Francisco to Canon City early in the season, it took much, much longer than that.
At the memorial service, Frank says to Bill: "Frank, you don't have to justify..." instead of "Bill, you don't have to justify...".