That last scan... Sasuke's Susanoo aura is floating around him, not Naruto's chakra. Anyway, I guess that he didn't have it with his EMS, because he didn't show it to us, but come to think of it, Madara's PS in 368 isn't cannon, so we can assume that he unlocked it some time after this, or some years after he gained his EMS. Sasuke had his EMS for like... 3-4 days?
He's had it for a day at the most, right after he left the hideout he said he passed by a few villages, don't know how long it would take him walking casually. If anything it is two days at the most.
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