They usually split the leave btw the two "partners". And they have them back to back to get the time off close together. They literally go out and buy double strollers because they know they will be having them back to back for the leave.
Then they turn about 7 and they set them loose. It's not uncommon to see roving bands of 7-8 year olds roaming the subways and streets of Stockholm.
Do you have any video of that?
(roving bands of 7 and 8 year olds?)