How does a 55-60 year old Captain relate to a 30-35 year old co-pilot?
Easily! The average age my colleagues is in the late 20's. A few of them are in their early 20's as are most of the cabin crew. They are a great bunch to fly with. They know their stuff and if you create the appropriate environment they will discuss things with you when they are unclear about what to do. The advantage of age is that you have probably exoerienced certain events several times over. The advantage of youth is that you are faster, pick things up quicker and are more flexible in your approach to most things. Combine experience (age?) and youth and you have a good team.
PM