When Two Pages Compete Against Each Other
Two pages answering the same search don't double your chances: they split them, and often both lose.
It nearly always happens with good intentions: a service page is written, then an article on the same theme, then a location page repeating the same points. Three pages answering one question weaken each other.
How to notice
- The same search shows different pages of your site in rotation.
- A previously stable page starts fluctuating after another is published.
- Searching your own site for the query, several pages look equally relevant.
The three fixes
Merge, differentiate or subordinate. Merge when the two pages say almost the same thing: keep the better one and redirect the other. Differentiate when they answer different intents that were never separated. Subordinate when one is the complete guide and the other a detail piece, linking them explicitly.
The mistake to avoid
Deleting without redirecting. You lose the links received and the page's history, the two hardest things to rebuild.
How to prevent it
Keep a list of pages with the main search each one answers. Before writing anything new, check whether that row already exists. It's a short table and it saves months of overlap.
Two pages on one search don't double your chances: they split the signals and both land lower.
Sources and Further Reading
Official documentation and guidelines cited or useful for going deeper.