I meant unfamiliar in the sense that I don't think Moridin knows what's going to happen with the connection between himself and Rand. I think he's more aware of possible repercussions than Rand is, but not fully aware of what the connection is or what kind of effects it will have. I remember...
Aaah! I totally forgot about that part! I feel dumb now. :(
Anyway... :look Yes, I'm curious to see how their connection will impact the last battle. Moridin acts like that connection is totally unfamiliar to him which also makes me curious.