Naruto Theory): in the episode 168 of Shippuden, minato said that he was watching everything from inside of Naruto. This also means that he also saw his grandchild (boruto) in time travel
List of Naruto: Shippuden episodes - Wikipedia
NARUTO MEETS HIS DAD! REACTION to Naruto Shippuden Episodes 167, 168 from naruto episode 167 in english Watch Video - HiFiMov.co