Had that comment from a customer who had a double oven plugged into a dangling double socket, on a spur off the sockets. The microwave and hob ignition were also plugged in on a three way block.
She commented a few days later that her husband had spoken to a couple of electrician who said it was ok 😯 .
I make that around 16 amps if the grill and oven are on if they are only 2000w elements!! Thats not including the microwave.
Oh and no RCD just a good old fuse unit.
Tony C