Now the way I see the time-frame
- Flicker evasion
- Raiton amor
- Speed Burst
Minato while spreading the kunais at the same time he is leaping over the eiso notices A clad himself in lightning and knows things would get harder from that moment and even as he continues with his previous move(speed burst) however with great caution knowing what is to come.
He would just had passed the kunai he droped in the spot he landed
<check prev move>(maybe 1m forwards while he's darting towards A) when he notices Raikage's huge arm close to his neck.
Minato is able to see him close due to his heightened reaction, (the anime proves so) so having being expecting something from the other end, he had kept his guard up even as he moves towards A and is able to react accordingly.
Minato vanishes using his famed teleportation, also using the raikage's speed against him, Minato is not far from the kunai he droped(where he landed before immediately using speed burst) before A closes in so with the raikage bursting in, he would just be passing the kunai as Minato teleports just a meter backward crouched doing an upper slam of rasengan on A lower body sending him into mid-air a little to the right so the wind coming from B won't meet up with them, then he quickly throws an FTG kunai upward past him while also teleporting there grabing the kunai on his left hand and slaming another right hand rasengan with a downward blow leaving A crashing on the ground.
A clearer picture
-Minato dashes towards A past his kunai which is about 1m behind him
-A catches up with incoming Lariat
-Minato vanishes while A zooms past and the grounds to cover is too small and before he would stop,
-Minato teleports 1m backwards crouched at the back of A and out of A's sight slaming rasengan into his body the instant he appears sending him into mid-air and teleports behind him in mid-air slaming an expanding rasengan on his back
(Hiraishin no Jutsu) - Flying Thunder God
(Kiiroi Senkō) - The Yellow Flash
As soon as he sends A crashing, he snaps(flick) his index and middle finger of his right hand in the direction of B(guessing his wind technique may have met up and Minato might recieved some damage but since you may not want A to get hurt, I'm guessing you won't be aiming your wind towards his direction in the first place and now that Minato is in A's current position. Lets just go with say the wind is coming that way) and as the wind would start to caress Minato, he with the previous finger gestures i mentioned, creates several blades of wind that cancels the wind and continues towards B. So his right hand would be bruised with blood stains ^^
(Fūton: Kaze No Yaiba) - Wind Style: Wind
picture of wind tech used by Baki on Hayate Geko
Minato lands safely, Mid-range to B with his kunais probably pushed some meters away from their initial position due to B wind but they are not destroyed and are still on the field.
And now there is one more enemy