Nowadays, onboarding system becomes mandatory because of competition, geographic separation, or because different teams don't want to share with other groups. From time to time at team-building events also becomes easier.
Once the team realized they had to leave their group to solve the problem, the team-building part was over. There are many reasons why the silo effect occurs for paperless onboarding, but it is very difficult for a company to operate at optimal efficiency and effectiveness without breaking walls and sharing among all teams.
You can remember an event where the team and the jury consisted of everyone involved in the project. The people from the production line to the engineers and management are in one team. It is very open to the eye to see the different levels of ways of approaching problem-solving.
You can tie a group to see the value each person brings. When top management realizes that everyone, management, is needed to advance their business, this can replace all company morale.
Management can study problems or obstacles faced by employees and understand why these problems arise. Each issue generally tells the company what employees think and what they think is important. Hearing what employees have to say without judgment is a long way to build trust.
Communication alone cannot ensure a successful business, but its absence dramatically increases the likelihood of failure. Team building events are a great way to bring the team to the same mind and change the current context.