Navigation course ROS1 & ROS2

I am learning ROS2, I don’t know ROS1. I would like to learn about navigation but why is the Navigation course for ROS1 40 hours while the one for ROS2 is only 11 hours?
I just joined a project where they are using ROS2. Is it worth learning ROS1 for navigation?

Hello @MMartinez-HAW ,

That’s wrong, the duration of both courses is more or less the same. I’ve just updated that information in the ROS2 Navigation course.