"Flight across space and time completed in a flash like instant" - Well yeah, it's talking about the Hiraishin no jutsu, that is the name of the page after all, or did you think the databook page wouldn't explain what the jutsu is. And then the sub text you speak of immediately starts by talking about how the jutsu works. By requiring a jutsu-shiki, which it then freaking points out to the reader with an arrow. It even puts another image right next to it showing the formula once more. That entire image was STRICTLY talking about the formula that is required to be placed. Again I'm still waiting for where it says minato uses the jutsu to save kakashi. All it says is he saves kakashi,and then gets to the main point of the topic, which is the hiraishin marking.
You also ignore all the exclamation marks. When Minato teleports behind Miharu, he has a ?!. And Obito and Rin both have ! when Minato teleports. But before that, neither Miharu, Rin or Obito were left in any kind of surprise. The fact is that kishi was consistent whenever regular movement was concerned, he used the same symbol. Even in the next chapter, when Minato arrives on the battle field, the same zoom effect is used
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. Hopwever with FTG, there was no such indication, no sound effect, no smoke effect, nothing. I feel like I'm just repeating myself. The only reason it mentions Minato saving kakshi first, is because it is telling us how he placed the jutsu formula. Nothing more than that.
Rin can differentiate between the two, because she saw him move from the location he was at, she was standing right next to him. However when Minato teleported, he just vanished completely, without making any movements whatsoever. With shinshin, he would've twitched or moved a foot or something or used a hand sign. With ftg, he dropped his bag and disappeared while standing still in a single spot. She's a chunin and body flicker is a D rank jutsu, of course she would've been able to tell the difference.
