[K03NT3S31N]

Are they arriving at the same time and from the same driver?

If not, It's not very likely that two packages didn't arrive from the one company at different times of the day.

Probably not at the same time and not from the same driver either.
I thought (since, according to Amazon, all parcels arrive on the same day) that I would pretend I wasn't at home and the suppliers would then leave both parcels in front of the door. Then you could pretend a thief had stolen both packages.

Are you planning to use two separate methods at the same time for each consignment?

I'm sticking to DNA (for now). However, if an OTP or a signature is required (or the driver decides not to simply drop the parcel in front of the door, but to bring it to a pick-up station), then I would pick up the package normally and use the other two methods.