I know it is better to avoid two subpages both about "blue widgets" even if it is no duplicate content.
What about the same situation with the homepage as one of the two pages?
Less a possible problem?
It's not always easy to avoid an internal "topic competition" among homepage and a subpage. The homepage uses generic terms, comprehending all specific topics of the subpages. So there are always some overlappings. Furthermore you want to offer more content to generic terms as the homepage enables.