Just made myself the most delicious fresh toast with lashings of butter and Bovril..... yum 😁. (I could empty a tub in 3 days....).
Said to husband in passing: "I don't like Marmite as much, but Bovril is out of this world..."
DH: "Surely it's the same thing isn't it ?".
The look on my face said it all 😆
YABI = it's the same thing!
YANBU = it's 2 totally different things and anyone saying it is not needs a smack with a wet fish !