On the other hand, they may be seen as having worked together.

The two men had worked together for a long time.

They had worked together on and off over the past five years.

You and I have worked together for six long years.

He and I have worked together for a number of years.

They have all worked together for years and in many cases are friends.

He and I have worked together for a long time.

The two men, who became close friends, have worked together on and off since 1979.

We have worked hard together for the last 18 months.

The two men worked well together and became close friends.