Sort of. You can regain a lot of different things through echoes--memories, obviously, but also the abilities and things your past self had. I think, if you have some sort of connection with it, that's how living things like Nobodies get echoed back.

[He thinks. He's not entirely positive yet.]

So you can't just do it. Not until you echo it back, somehow.

[At Jesse's other question, Dante chuckles.]

I didn't know you were from the same past as me, though. I suppose it was a just a lucky guess.