Author here. Usually you need a few hours overlap per day at least across a given team. This can be challenging depending on where the team members are located.

Author here. Usually you need a few hours overlap per day at least across a given team. This can be challenging depending on where the team members are located. We've had team members in Australia working with Europe, and there's literally no convenient overlap. In that case, someone needs to stay up late (or get up early).