Return of the documents sent over for the first adult British passport

[estuarie]

Although my naturalisation letter, as well as the official webpage, warns that it may take more than the standard 6 weeks to get the first adult passport, I see in the timeline thread that actually it happens a lot faster, in just a couple of weeks.

I was wondering if the originals I need to send over will be returned with the new passport or separately? And if separately, how long does it usually take to get them back?

Thanks

[alterhase58]

Timeline thread also shows document delivery separately. Sometimes documents come back with the passport but most times after the passport.