Here is my little theory
Right after the paralyzation of asura path via raiton clone, deva paths interval activated due to using bansho tenin.
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When the back up arrived Kakashi came out of the ground wielding a raikiri.
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This means he was about to strike one of the pains, imo he wanted to pierce deva path from underground because asura path was already immobilized.
If the backup hadn't appeared Kakashi would have pierced deva path, surprising him with a raikiri from
behind.
There is no way deva could avoid it because the linked vision was disturbed by paralyzation and the interval of 5 seconds wasn't over.
Deva path was only able to dodge raikiri because he pierced Kakashi with a black stake before (
in front of Kakashi), influencing him with pains chakra.
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Even though Kakashi wasn't aware of the "interval" info, he would have succeed and he would have finished immobilized asura path after that with a raikiri, too, but the slow big punches of choji and choza were no problem to dodge for deva because they came from above and yeah the punches are no where near the speed of raikiri.