So, the Digitec warranty extension refers to the services specified in Digitec's terms and conditions.
The Apple care extension offer has nothing to do with this, this is a service from Apple itself. This service also helps you by telephone through an experienced Apple supporter with questions about the operation of the device and all the software. A very recommendable thing, I have learned a lot this way. Having grown up in the Windows world, I quickly gained experience and can now handle the device quite well after half a year. I highly recommend the Apple care extension, it's worth every franc.