Prompto's not actually at the Coven whenever Toby shows up, having had to run off to deliver some packages shortly after getting the Weird Ass Flashlight Gun Thing.

And then there was the whole Mini Regalia Thing.

And the Gyshal Greens.

And basically it's not until a bit later that Prompto even makes his way back to the Coven, Weird Ass Flashlight Gun Thing in hand because this is not his whatever and he would like to leave it here for the actual owner to find.