Who conjures the Prongs Patronus?

[erisedstraeh2002]

No: HPFGUIDX 53311

Norm wrote:

> Doesn't Harry1 *have* to cast a successful Patronus in order to be 
> able to return later (as Harry2)?

Now me:

I'll attempt to help.  Harry2 doesn't "return later" to save Harry1.  
The events are happening simultaneously, even though we see one 
following the other.  Once Harry and Hermione turn the time-turner 
back, they are re-living that time *during that time.*  Which is why 
the time-turner is so dangerous - as Hermione says, a witch or 
wizard, in the surprise of seeing themselves, might kill their past 
or future self by mistake.

~Phyllis
who thinks the way JKR constructed the time-turner is a demonstration 
of her brilliance