How is Minato knocked out?

[Tarinth]

So we all know that Minato had aided Gai in his fight against Madara by teleporting the gudodamas
away.

However, after he did that, he did not return to the battlefield. Instead, we find that he has been
knocked out on top of the Hokage summit unless he decided to just take a nap there until the Infinite
Tsukiyomi started.

Now, I don't have an exact time for how long he was out, but we can estimate that the fight between
Gai and Madara, along with Naruto and Sasuke coming along, along with Madara finally casting the IT
took at least 10-15 minutes.

So, as an Edo, he regenerates damage and regains chakra quickly, so how in the world did it take him 15
minutes to teleport back to the battlefield? In fact, the gudodamas didn't seem to have even hurt him since
he managed to teleport it far away where Madara couldn't make it destructive.

So, does anyone have an explanation as to why he had just been chilling on the Hokage summit? Plot?
Laziness? Kishi forgot?

 

[Angelic.]

madaras balls hit his cloak too hard -.-

 

[ChicagoJhawk]

He went to konoha to get a new robe. If he's gonna solo madara might as well do it in style

 

[Ambivalence]

Maybe he just decided to take a nap.

 

[KesOnFire]

He went there atfer tanking the TSB's for Gai

 

[Gold Lightning]

May e the effects of being hit by the truth seeking balls. Arent they like ohnokis jinton? They erase whatever they touch. Since minato made contact with them, it probably drained all his power completely or something.

Probably just plot though, kishi needed a way to keep him away from naruto until their farewell.

 

[WalksInShadows]

it's just another example of plot convenience imo.