[mothered]

I already started and went for DNAing both of them.

Did both packages arrive at the exact same timeslot, obviously by the same driver?

Yes they did.

UPDATE: Today I received the before announced email from apple, telling me they are investigating and asking me for a pic of my ID or driver‘s license.

I wrote a little paragraph thanking them for their help and politely asking them if it is possible to hurry up a little cause the Macbooks are presents.

Will keep you posted.

Sounds like you're on the right track.

We shall await the latest developments.