Originally posted by: wmgan Even if the "ghosts" were actually visible, Luke should still have sensed their presence, just as he would if he saw them in the flesh. Vader certainly had no trouble recognizing Obi Wan as an old man . . .
Did Luke shower, shit and shave with Anakin for a decade? No; in fact Luke had NO CLUE what his father looked like until the big reveal at the end of Jedi.
In contrast Anakin did shower, shit and shave with Obi-Wan for many years. It seems reasonable that Anakin would recognize Obi-Wan. Oh yeah then there’s the fact that when Vader stuck down Obi-Wan he was an old man. Does, “Your skills are weak old man” sound familiar?