Exactly that. I'm pretty sure the odd feeling is an abscence of stress related to food and weight now that you mention it.
Also, with regard to smaller portions I think your body will let you know what you need. So at the moment I need a certain amount of fuel just to haul this mass around, but when I'm lighter I will need less fuel, so I guess I will be less hungry and fuller quicker.
Take a thin person and make them carry 7 stone around in a backpack 24/7 and I bet they would have an increased appetite.
I have noticed one tangible thing I can report. I don't really eat much sweet stuff but I do have a weakness for coffee made with 1 heaped spoon of sugar and 1 heaped spoon of coffee mate plus a normal splash of milk. Well the last couple of days it has been too sweet so I have gone to a level spoon of sugar.
What is strange about that is that it isn't a result of cutting sugar from my diet as I didn't really have much to start with, so it's not that it now tastes sweeter because my food is less sweet iyswim.
Anyway, it sounds insignificant, but I reckon it saves around 5 calories a cup. I usually have around 4 per day, so that's 20 calories, 140 a week, 7280 a year, which is roughly 2lbs of fat.
Okay, okay, I fully realize 2lbs of fat in a year is no great shakes, but if the theory of incremental gains works for the team GB athletes, surely the same applies to incremental losses 😀