They were only together as long as they had the same goal but different strengths. It’s what makes them click together like a complicated puzzle, and such a team will only work because it’s them.
It’s difficult to tell where the individual ends and the group begins, and sometimes they think they’re not really special at all – that they just happened to learn different skills, and just happened to go together. There was no sign, but rather an instinct to stay together, and they can’t tell whether it’s a curse or a blessing.
They later find out that it’s even harder to break away, and even harder to accept their circumstances, but it’s easier to go along with what the situation calls for, and so they end up being a one and one that still equals one.