I agree - he might have seen them at Mad Greek (I think the PCA mentions some other places too, but I need to reread). He may have followed several other young women, as well, gradually closing in on his "perfect target." Interestingly, the street light nearest 1122 (at the apartment complex nearby) was inoperable that night. It was fixed afterwards (it's' in the media thread somewhere, impossible to find right now, so IMO, MOO),
Their house was his best target - and that may be why LE says he "targeted the house." They might have pings showing him lurking around other places too. I wouldn't be surprised at all if he found himself at parties in Moscow, after his vegan meal at Mad Greek (falafel, cucumbers, tomatoes, dolmades).
"Crossing paths" is the best way to put it.