Automatically relate all features within an Epic with each other

When I look at a feature A and want to navigate to another feature B, while both are part of the same Epic X, I need to first navigate to the Epic and then from there switch to "Related" tab to navigate to the other feature B.

It would be much easier, if either:

a) a feature that is part of an Epic would be automatically related to all other features of the Epic

or

b) in the "related" tab, all features of the Epic would be listed right under the Epic name (I would prefer that one, since it allows to immediately understand that those features belong to the same Epic and are not otherwise related)