Ikea expert,
you are probably right. Of course, the devices can be connected in many ways. I did not deny that; I merely pointed out the warranty. 2 devices, 2 connections. Period. That simply means a stove outlet as well as a 16A fuse-protected outlet or a splitter. Ikea certainly will not write in the manual how NOT to do it. A customer should not tamper with the devices anyway, so the connection values are basically completely irrelevant to them. If the electrician connects everything correctly, there is no reason to worry.
That you make such specific statements is fine. You have really broad and specific knowledge, which is really great. BUT! In this case, I try to think in the interest of the company and the possibly complaining customer. Should they then go to customer service or the manufacturer and say: "... yes, but in the forum they said...?!"
Regards
Nayla