How interesting! I hope ours end up being close too. They are so opposite. Even at meal times; baby girl will give you her opinion on everything (Nom, nom, nom!), while baby boy will take his spoon, eat, set it down, then look at you silently with his arms stretched out while he waits for more. But they show signs of concern if the other is crying and comfort one another. I think they will balance each other well. One will encourage a sense of adventure and the other will be the level head.
I love that your mom managed to catch your shenanigans on cassette! That must be fun to look back on. -Aimee