Examples of teams of teachers?
In the more advanced levels, I have had subjects taught by several lecturers. Each one was teaching the part of the subject closer to their area of research and expertise.

On a more general level, there was a department of Astronomy and Atmospheric physics (climate and weather). Astrophysics subjects were taught by astrophysicists, and climate subjects by atmospheric scientists (do they have a cool specific name?). Inside Astrophysics, stellar evolution was taught by a different subset of professors than extragalatic astronomy.

It is also common for the senior professors to lecture, and the grad students to do problem solving. This is usually explained because a clear explanation of the theory requires experience and care; whereas solving exercises is a less critical task, ideal to build teaching experience. (Bad people that hate professors may say that teaching theory requires less work, and once it is done they can repeat the same for years, but solving exercises requires more work)

Edit:

Another example is the curriculum. Each subject is built upon the subjects taught before, with more or less coordination among the lecturers. Differential equations requires the knowledge obtained in Calculus, and it will in turn be used for Quantum Mechanics. If the Calculus lecturer fails miserably (for example, not covering the necessary material), the students will struggle through the following ones.