Ziz said:
Bingowings said:
I read it (after ROTJ but the signs are there) that Vader is sensing Leia and mistaking her for Luke, knowing Han helped Luke escape the Death Star and shot up his ship adds to the assumption that the person strong in the Force in that ship is Luke (when he finds he isn't there he improvises the trap at Bespin knowing that Luke will feel the pain of his friends).

Dude, that's just Lucasizing.

Vader had no way to know where Luke was during the battle, so failing any hard evidence that he was fighting the walkers, the other logical place for him to be would be on the Falcon during the escape. And from a "capture the Rebels" perspective, he figured that's where Leia would be too, so it made sense to chase the Falcon instead of worrying about individual X-Wings.

I'm not sure how much was happy happenstance and how far ahead at that point things were being planned but Leia/Sister thing isn't as far fetched as it may have seemed back in 1983.

Vader knows Luke is on Hoth as soon as he sees the probe droid data, (the connection seems more than just instinctive and if the Force is leading him Leia is there too), Leia's dark side manifests in choking Lando by proxy (just like her dad), when Luke reaches out to Leia while hanging off the antenna she picks up his location instantly.

I know Gary Kurtz insists that the other/sister was originally meant to be a totally different character but the only things getting in the way of the link are those retroactively rather uncomfortable snogging scenes (and in the real world attraction between seperated siblings is a well recorded).

So if I'm Lucasizing, so be it (not every Lucas idea is a dud if that was the case none of us would be here would we?).

Vader sensed Obi-Wan in ANH so why shouldn't he sense the child (which he didn't know he had in ANH) on the Falcon in ESB?

He just didn't know there was more than one (even Padme didn't know that until they hatched).