Riding with friends

I tried to ride with a friend last night. I selected to ride with them in the prescribed way. I was then placed at the normal start point (in London). I arranged with my friend to meet at the top of Box Hill. Both of us were at the same place but we could not see each other. on screen or on the list at the side. What did we do wrong?

When you check the after session data did both you and your friend have similar data (even though you did not see your friend)?