Gosh that's amazing. Mine pretty much ignore each other but they are DCDA B/G twins so perhaps less used to being together in the womb. They sleep next to each other at night in a cot and don't disturb each other but show v few signs of caring that the other one exists!
Twins are 29 weeks and share a co sleeper and they don't settle at all if parted. They have to be touching in someway or they become restless and refuse to settle.
They're okay through the day, happy to play separate and sleep in the double while out but when they're tired at home or going in the co-sleeper at night they refuse to settle and start screaming if you try to separate them. If you move them while sleeping it's like they can sense it and wake up, - breastfeeding is a pain. I'm always tandem feeding on a night.
I don't mind any of it, I think it's adorable and I personally believe it's one of those identical twin things.
Do your twins do anything that show they share a bond? I'm curious.