Have 2 authentication in one htaccess file

Hi guys,

I am not sure if I have post in the correct place. I am wondering if
it is possible to have 2 different authentication method through one
htaccess file?

Example:

Bob uses LDAP to access the webpage, Jane uses htpasswd file to access
the webpage. Would it be possible for apache to search for the
required info by using something like and 'if...else...' statement
like

SEARCH LDAP for Jane ID
IF (Jane ID not found in LDAP) THEN
SEARCH htaccess file
END

I hope I have clearly explain my dilemma. I am open to any suggestions/
opinions/criticisms on this authentication issue.