Board Thread:Naruto Discussions/@comment-25051328-20150620021914/@comment-26381547-20150621002330

May very well be another type of Lightning Jutsu (and not chidori or "lightning rasengan") because A and B are able to use lightning style Jutsu in a similar manner. Boruto may follow that example.

People also need to stop with the Byakugan enabling the chidori, Kishi didn't give Boruto Byakugan and he's not going to awaken it (plus even if he had byakugan, wouldn't he have been using it in the trailer with chidori?)