Magus has posted about it several times on the IC boards.
The problem is that it takes inhuman reactions, so you just have to guess DI. Generally you can guess DI well enough to regrab once or twice, they will either DI away or back. It is unreasonable to guess like the 50 times that would be needed to get to 160, but if you know where they will DI, you can dthrow regrab that one or 2 times needed for nana to get back where she needs to be.
I would refer you to videos if I had them, but you can ask Reneblade and whatever other falcon played me. Dthrow>regrab works for eternity as long as I can guess the DI. I did it to you (Zeus) a couple times when you had just separated Nana and I needed time for her to come back.