ESE!Lupin redeux

[mizstorge]

No: HPFGUIDX 111389

Having gone back to review the original ESE!Lupin thread, I've been 
skimming through the books looking for confirmation. What I 
discovered is that Harry only hears the events of the night of James' 
and Lily's murders when Remus Lupin is around - on the train, during 
the Quidditch match and confronting the Boggart/Dementor under 
Lupin's supervision when learning the Patronus charm. In the woods on 
the night of the Shrieking Shack, with Sirius and Hermione, Harry 
hears screams and we are told he thinks he is going to die with his 
mother's screaming the last sound he hears - but we don't have the 
dialog ("Not Harry!") to confirm it is not actually Hermione he's 
hearing.

The common denominator is Lupin, not Dementors, since the Boggart 
wasn't a real Dementor and Lupin wasn't at the lake with Harry, 
Hermione and Sirius.

So, having been made suspicious of Lupin, I wonder: is it actually 
because of Lupin's presence Harry hears the dialog? Is it because 
Lupin was at Godric's Hollow that night? Does Harry pick up thoughts 
not just from Voldemort, but maybe also those working closely with 
him?