User blog comment:Alcahona1095/High School DxD BorN Episode 11 Review/@comment-24421137-20150614033003/@comment-24421137-20150614054225

That still wouldn't make sense if they say they were fallen angels, and evidence proves other wise, and unless there is a machine to make them fallen angels, it still wouldn't make much sense. Everyone knows they are devils and just saying that, if the underworld takes their word on it, then they wouldn't be able to more say fly anymore without the risk of the public knowing. Yea I understand why he said it, but the plan just doesn't seem well thought out in general.

So not only did Koneko know where Kuroka was, she knew how to direct her ki to her and she did it at an unknown distance. Yea maybe Kuroka was also sensing Koneko....for whatever reason, since it would coincide with her Siscon personality, but this complete speculation.

It could have been this, but it could not have been this. I would think Author would have specified that the other party would need to want to seek them out as well, but he doesn't, he just tells them to have Rias in their hearts and she will come. It could have also been Loki controlling her and forcing her to the place the ORC was.

Also no these aren't really explanations these are your theories. The anime did not explain any of that, well maybe the first one but not the others, it just said here is what happening and that is it.