Two URL aliases for one node in menu
It sounds like you're looking for NodeSymlinks:


  NodeSymlinks allows you to display the same content to users at
  multiple locations in the Drupal menu system with unique URL path,
  unique navigation breadcrumb and without the SEO penalty that usually
  occurs with multiple copies of the same content.
  
  This is useful when you want to have the same page reachable though
  multiple menu items, each with its own URL, menu trail and breadcrumb
  path.