I was thinking the same thing. I recently had something from Amazon delivered by a woman (same as you mentioned, no uniform or any indication she was with Amazo

I was thinking the same thing. I recently had something from Amazon delivered by a woman (same as you mentioned, no uniform or any indication she was with Amazon at all) who turned up with 2 young children who got out of the car and were running around in the car park outside my flat while she came in to deliver a package. I was confused at the time but this would definitely make sense.