Tekka on the other hand has only a tenuous association with Luke due to his possession of the map, and gives no indication that he is aware of Rey’s existence at all.
We see him for about five minutes and there is no reason for him to tell Poe (or Kylo) about Rey, so I really don’t see the problem. And saying that having a crucial part of the map to Luke is “only a tenuous association” is an understatement.
Yeah, it is an understatement. It’s pretty clear that Luke trusted Tekka enough to give him the map.
You don’t see a problem with Tekka’s relationship with Rey? Should we make the assumption that Tekka was sent by Luke to watch over Rey? I would guess that this is JJ’s intent, since it yet again mirrors ANH, but the situation is quite different here. Rey is struggling to survive, eking out a meager existence in near slavery in a literal dump. At least Obi-wan was respecting the wishes of Luke’s uncle when he kept his distance. Here it seems like Tekka is either completely unaware of Rey, in which case this is another coincidental part of the film, or he is being a horribly neglectful guardian.